Spm Trial 2009 Che Q&a (kelantan)

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SULIT Kimia Kertas I September 2009 l'/o jam

Nama Pelajar f ingkatan

JABATAN PELAJARAN KELANTAN DENGAN KERJASAN{A PERSIDANGANKEI}ANGSAANPENGE'I'UA-PENGETUA SEKOLAH MEN ENGAH MALAYSIA CAWANGANKELANTAN

PEPERIKSAAN PERCUBAAN SIJIL PELAJARAN MALAYSIA 2OO9 KIMIA KERTASI M a s a : S a t uJ a m l , i n t aB e l a sM i n i t J A N G A N B U K A K E R T A SS O A T , A NI N I S E H I N G G AD I B B R I T A H U Arahan: 1. Kertassoalanini adalahdalatl drvibiihasa Melavtt. Inggcrisclatttrahasa kedua-duabahasa 2. Setiapsoalannrenganclungi Mcla-ytt olchbahaszr hrggcrisdandiikutidi bar.vriltrtya Bahagian atasdalambahasa 3.

2 di iralanran nraklumat tnembaca Calondikehendaki

Keftassoalanini rnengandungi3l haliutlanbcrcetak. [,ihat Sebelah STILIT

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INFORNIATION FOR CANDIDA'TES I . T h i s c l u e s t i o np a p e t c' o n s i s t s 2 . A n s r . v car l l c l u c s t i o n s . 3 . A n s r . v ccr a c h c l u c s t i u nb y b l a c k c n i n gt h c c o r t ' e c st p a c co- n t l t c a n s w c r s h c c t . 4 . B l a c k c no n l y o n e s l r a c cf-o r c a c h c l t t c s t i o n . 5 . I 1 ' y c l uw i s h t o c h a n g ey o u r a l t s w c r 'c, r a s ct h e b l a c k c n e crln a r k t h a t y o u h a v c I r t a t l e . T h c n b l a c k e r rl h c s l t a c el b r t h e n c w i t n s w e r . ( r . T h c d i a g r a n r si n t l r c c l u c s t i o r rpsl o r , ' i c i c ad r c l r o t d r a u , t tt t t s c a l ct t r t l c s ss t a t c d . 7 . Y o u n r a y u s c a n o l t - p r o g r a n r r r r a bsl cc i c r t t i l i cc a l c u l a t o r .

MAKLUNIAI' UN'I'UK CALON I. Kcr'ltr,s soqlutt iui trrangutrtluttgi50 soulcrn. 2. Jtrtrob seiltuu ,soulurt (rr(tl)(ttt. ntutgltittttttl;dnrttdn[adtlt,cntgbeltrl podu ket'ltt,s.f 3. Juy'ub c.langurt 4. Ilitctmkun sstu t'uengau .sohojctltagi s'ctiup ,toulun. 5. St,kiron1,aondo henrlqk rncnrrkarl;ttnjott'upan, padamkan landrt .t;an,qrclrtlt clibuul. K c'tn t rtl i a rt h i tun ka n .j ctrt'el)(ton ),ctng b o r t t. rncngirinti .soolun titluli diltrliis ntengilittl ,vkqltrkt:crttrli ditt.t,trlnkutt. 6. Ilojoh .1,trn51 7 . ,4ntlu tlibenttrkun nenggtrttttkutt kulkrlutor' .sctintifikyung tidcrk bolelt diprogrctntliurt

Question I to Question 50 arc fbllowcd by four options A, B, C or D. Choosethc best option for each clucstionand blackenedthe correspondingspaceon the objective answer sheet. Bagi Soalun I hingga Soalan 50, tiap-tiap soalan cliikuti oleh emptatpililtun.iuvt'trpan A, B, C dan D. Pilih sotu jawupan yang terbaik bagi tiap-liap soulan dun hilan*nn ruungan vurtg sepadan pada kertasjawapan objektd'anda

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SULIT I

454rt1

DiagramI showstheatotnicsyrnbolof elementX simbolatontbagi un.sttrX RaiahI menunjukkan

DiagramI Rcjuh I Which of the follor.vingrcprcsentsl9? Antara berikut,apahahvang diu'akili oleh angka 19? A P|otonnumber nomborproton B Nucleonnumber nomborrutkleon of neutrons C Nutnber bilanganneutron D Numberof elcctrons bilangctnelektron Given thc formulactbr alul-riniurnion is All' and sulphateion is SO+2-. Choosethc correct chemicalfbrnrulaof alumminiumsulphate Dibari fbrmulu ion ultrminiumiuluh Al3*clunion sulful iuluh SOa'-. Pilih /itrmula kimiu yung betul btrgialuminiumsullat. A B C D

3

Al(SO4)r Al2(SOa)r Ah(SO+)z AISO4

indicatesthatchromiumis a transitionelement? Which characteristic krontitrmialah trnsurperalihqn'/ menunjukkan ntanekah Ciri tnttg A B C D

It can fbrm a basicoxide. Ian1,e6t1th ntembentukoksidobes. It canconductelectricity. Ianya boleh mengalirkan arus elektrik It hasa high meltingpoint. Iunyq m.*runyai takat lebur yang tinggi It can form colouredsolution. Ianya boleh membentuklarutan berwarna.

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Diagrarn2 shorvsthe positionof atomX in the PeriodicTablc. of atomX is 2.8.y. The eiectronarraltgement aton X di dalam.Iaduulhcrkula. kedudukan Rajoh2 menuniukkan 2.8..y X ialah atom elcktronltagi Su.sunan

Diagram2 Ruioh 2 What is the valueof y') Apakahnilaiy AI B3 C5 D7 Neongasdoesnot reactwith otherelementsbecause Ga.sneon tidak bertindak balas denganunsur lain kerano gases A existsas monoal.omic gas monoatom wttjud,sebagai B alwayscombineswith itself sentiasabergahungdengandiri sendiri C hasstableoctetelectronalrangement elektronoctetyang .stobil ntentpun.yai susLtnqn D hasstabledupletelectronarrangetnent tremptrnyaisusunanelektron dupletyang stubil

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P, Q arrdR. 6. Tablc t sh6wstfic inforrnationaboutthc elcctricalconductivityof substanccs P, bagi bahan Q dun R. maklumattentqngkekonduksianelektrik Ja(hql I mentu.titrkkan Substunce conduct Doesthesolidsubstance electricitv?

P

Does the moltett substaucesotrduct eIectricitv'?

a

R

X

X

X

Table I JQdual 1 v V h i c hs t a t e m e n ti s t r u c ? '/ [tcrnyntaan yong monukah hcnur A

S o l i d P a n d m o l t e n P c o n t a i nf i e e m o b i l e i o n s . Pepc.iulP clun lchttrun P mcngunthmgi irtn-ion haba'sbargcrak

B

Solid Q atrd tnoltett Q contaitl atonls. Pepeiul Q tlon lelturun Q mengunclungiutom-crlom' There arc no ions in solid R. itttr-itttt Di dulum pepeiol R tidak terdcr1,tttl

C D

7

Mclltett R contains free mobile ions. Lelttrran R ntengandungi ion-ion bebas bergercrk.

W h i c h s o l L r t i o ns h o w s t h e l i i g h e s tp H v a l u e ? Lcu'ttturtntttnctkahnrentrniukkon niloi pH tertinggi / A

0 . 5 m o l t l m - r s u l p h r , r r iac c i d 0.5 mol clrn'ttrc'idsulJurik

B

0.5 mol clm-3ethattoicacicl. 0.5 ntol cln{'t asicl etanoik.

('

0 . 5 n r o l d r t t - ta c l t t e o t tlst n l t t r o n i l t 0.5 nrttl ,ltrIJ ttmrtt,tnitrukttt'rttrs

D

0 . 5 m o l d m - ] s o c l i u mh y d r o x i d c s o l u t i o t t 0.5 mot clm-r lqrtittn nulrium hiclrok,siclct

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SULIT X + Sulphuricacid Substance asid sulfuric BahanX

+

SaltY + Water * Air Garam Y

Carborrdioxidc Kqrbon dioksido

X bc? Referringto the equationabovc,what couldsubstance Menjuk persamaandiatos , apakah kemungkinanbahanX'/ A

Coppe(ll) oxide Kuprum(ll) oksida B Magnesiummetal Logam magnesiunt C Zinc carbonate Zink kctrbonat D Sodiumhydroxide Ntttrittm hidroksidcr Which of the fbllowing is a coloureclsalt'/ Antora herikutyang manakahsltatugarom berworuna'/ A

Iron(ll)sulphate Fennt(ll) sulfcrt B Silvcr nitrate Argenlumnitrut C Lead(ll)nitrate Plumbum(ll) nitrat D Calciunrcarbonate Kqlsiumkarbonet thc rcactionin thc industrialprcparationof atrttrtollia. l 0 Thc cquationin Diagraur3 rcprcscnts Persamaandi dalatn Rajah 3 mev,ukilitindctkbulaspcnghasilunomntonicrdalarnindu:;tt'i. CatalystM 2NHr N2 + 3 Hz ---------------450"C/60 atrn Diagram3 Rcjah 3 What is catalystM? Apakah ntangkin M? ^ Irott r erum Nickel b Nikel c Copper(II)oxide Kuprum(ll) oksida oxidc D Manganese(lV) Mangan(lV) 0ksida

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strLIT

W h i c h o f t h c f b l l o r , r ' i n gi s a p r o p c f t y o f c e r a m i co b j e c t s ' ? Antqro ltet'ilutt.l"ctttgtttturqktth si/at bcthtrnserqnrik'? A R C D

Good hcatcotrductors Pcnguiir ltultct -t'ttngltaik W i t h s t a r r chl c a t b c t t e r Sangttt tulton htthrr G o o c le l e c t r i c a lc o r t d t r c t o r s Pengu I i r eIlie'ltt r i li .t'trng b cti k Does ttot Ii,ithstartclccltt.tl'ltcssit-rt.l h t t t'tt tt g I a ltct tt ttttt tt tlttt ltttt

1 2 T h c l b l l o w i n g s t a t c n l e n t sa r c l c l a t e c tl o t h e c o l l i s i o t tt h c o r y o f a r e a c t i o t ' t ltariktrl ttdulah berkuilsn dcngun teori perlnnflgQrln 'strQltrtinduk . Parn),trt4(ttt-pL,rLt.t,(tt(rurr htrltt.s. \ V h i c h o 1 ' t h cl b l l o u , i n gc o n r b i n a t i o ni s t r L r ea b o u t t h c e f f e c t o f t h e c o n c e t r t r a t i o t ' r t lt l t c r c a c t a n tp a r t i c l e s ' ) .,1rtltt;trkornbinttsi heriktrt1,cutgnttrtrokuh bcttcrr tcnlttng kasutt ltcpekutun lte crltrs :Lu'(tlt-:drdh bultun ti trduk bcrIu's I II III lV A U C D

T h e l o t a l s u r h c c a r c ao f ' t h e r e i r c t a r lpt a r t i c l c si t l c r c a s c s Jtrmluh ltrtt:;;tenntrkeon zoreh-znt'qh bqhan tindoli bultrs bertctmboh T h c k i r r c t i cc t t c r g ! 'o f t h c r c a c t a n tp a r t i c l c si t t c l c a s c s Tt'rttrgctkinctik zut'uh-zuroh buhun Iincluli ltuIu't barlunthah T h e n t r r n b e ro 1 ' t h er e a c t u n tp a r t i c l e sp e r o n e u n i t o f v o l u m c i t t c r s a s e s Bilttrtgctu:trrolt-:ctrttlt buharr tindak balus Jtcr .sulrtunil i.sipadu bct'tcttnbuh T h e l i c c l u e n c yo f t h e c o l l i s i o n b e t w e e nt l r e r c a c t a t rpt a r t i c l e si t r c r e a s e s pcrlrrttggoran etttera zerah-zut'olt buhart lindok bulqs bertttntbult I-'rclrrtc,nsi I artcll onll, I dutr ll .sultcr II ancl ll only ll dnr lll sohuio I a t r c Il V o t t l y I dun lY sohclitt l l l a n dI V o n l y Ill dutt lY strhctfa

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W h i c h o f t h c f b l l o w i n g i s n o t a c h a r a c t c r i s t io cf a catalyst'? Antat'ct.\,ungberikut, .y,crttg ntctnakqhbukan c,iri mangkin'/ A B

l1

454Ur

A c a t a l y s ti s s 1 ' r c c i f iicn i t s r c a c t i o r r Mangkin utlaluh klttrsu,ydtrlunt tin(lLrkbttlasnyu A catalyst inflauencesthe qr"rarrtity of prodr.rctof rcaction Man,gkin ntentpengdruhi huntiti ho,giltinclak bulq:;

C

Tlte chcntical propcrly clf a catalystrcrnainsr-rnchangccl at thc cncl o1'thc reactiou Siltrt kimiu nrongkin tetup ticlok bertrbolt di oltltir tindttk bulus

D

O n l y a l i t t l e a n r o u n to f a c a t a l y s ti s n c c c l c ct lo i n f l u e n c ct h e r a t c o f r c a c t i o n [{anvcr .sedikitttrttnckitt diltarlukurr tnttttk tnctntrtengtrt'trhi kudur titrcluk bulcr

E,stcrsarc uscd as fbocl flavorrrinqs. W h i c h o f t h c l o l l o w i n g i s a p r o p c f t yo f a n c s t c r ' / l:,,tI t't' d i gt lt u li u u .sc b u,qtri 1tcr i.scr I ud l(d I tu'/t. 11t tI t.tr tt It er i k ttl, .t,o n { ntu tta ka I t .sif h t est er"/ A

S o l L r b l ci n r v a t c l Lcu'trldrrlontutr

ll

L o r . vb o i l i n g p o i n t Tokut didilt rcndult

C

M o l c c l c n s ct h a r rr v a t c r Lchi h ltuttlttttlut'ilttttlu trir

D

C a n c o n c l u ce t lectricity [] o I eh mt,ngkoduksi ktut rr t'rr,teI elit ri k

1 , 5 T h c f b l l o l v i r r gc h c n r i c a lc c l r u r { i o sr th < l w st l r c p r c p a r a t i o no f c t h a r r o li n t h c l a b o r a t o r y . Persrttrtottnkiniu bat'iktrl ntenttttjtrkkun l)an.t,(.(.li(tttrr clunttl t/i tlultrtn nruktnul. ycast (',,[]r-.Or,

---+

2(':llsoll

|

2(O.

W h a t i s t h c r r a n r co-l - t h c p r < t r : c sssh ( ) w nb y t h c a l r o ' u ,ccc p r n t i o n ' / ,,lpalrolrn(tntd l)t'o.\L'.\.t'un{tlilttnf ulilrttn tli uttt,sl A B C D

Oxidation Pengok.titluttn Dehydration Pe'nclt'hidralq rr F er - r n e r r t a t i o r r Penupoicrtt Hydrogcnatir-rn Penglt iclrogenutt

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SULIT l6

454u1

The structuralformulaeof two moleculesP andQ areas follows. Formula struktur bagi molekul P dan Q adalah seperti beriktrt H

HH

HH ltlll H-C-C_H

H-C-C-C-H

tltll H

HOH

H

OH

a P andQ'7 is trueof bothmolecules Whichstatement Pern.vataanyang manakah benar bagi kedua- dua molekul P dan Q? A B C D

They havedifferentfunctionalgroups Kedua - duan.yamentpunyaikumpulan be(imgsi y'ang berlainan aresitrilar All theirphysicalproperties sama SentuasiJatJiziknya All their chemicalpropertiesarediffcrent Semuo.sifatkimianyaberbezct by the samegeneralfbnnula Tl-reycan be represented Kedua duanya boleh diw'akili oleh sattt./brmulaam vang sama

ol'a reaction. 11 Thelbllowingis thehalf equation bctgisctttttindak balas. Berikutedctlahsetengahpersdnl(lut1

Cl,

+

2c

-_-+

2CI-

\\'hat is nrcautby rcduction reaction basedon thc cquation'/ .lpctkolt .vung dimak.tudken dengan tindak balas penurunan perdasarkan persamaan ittil A

Electronsare receivedby ciiloline Elektron diterime oleh klorin

B

E,lectronsare donated by chlorine Elektron diderma oleh klorin

C

Electronsare received by chloride ions Elektron diterima oleh ion kloridct

D

Electronsare donatcd by chloride ions Elektron diderma oleh ion kloridct

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sflLIT agent'? is anoxidising l8 Whichsubstance

Bahen rnenctkah))ang merttpakan agen pengoksidaan'! A ts C D

l9

Zinc Zink S u l p h u rd i o x i c i eg a s Gtts sul.fLtr dioksida P o t a s s i u mb r o n ' r i d es o l u t i o n Lq ru lttn ku I iu m lt ro m idu A c i d i f l e d p o t z r s s i u tcnl i c l r r o r n a t e ( V Is)o l u t i o n Lcrnr tu n ku I i u nt d i k ro ntut(Y I \ lt eros i d

W h i c h o f t h c f o l l o w i n g c h c r n i c a lc c l u a t i o n sr c p r c s c r t t tsl i c r c a c t i o no f p r c p a r a t i o rot f s o a p ' l Diunlttru pcr.\unLtotl kitniu bcrikut, ),unK rnctnukuhtncv,ukili tirttluk ltulu,sltctt.l'ecliuurt.sulttrtr'.' A B C D

Ethanoic acid + ethanol -+ cthyl cthanoalc+ watcr A.sitJetunoik+ ctonol ) ctil clunrtut * trir O i l + s o d i u mh y d r o x i d c+ g l y c e r o l + s o d i u mp a l u t i t a t c Minvak -t natrium hidrokside ) gli.serol * ualriurtrpulmitat Glucose * yeast -+ etltanol * carbon dioxide Glukosct+ vis ) etunol * kurbon dioksicla A l k y l b c r r z c r r es u l p h o n i c a c i d + s o d i u r nh y d r o x i d c - > s o d i u n r a l k l ' l b c r t z c t r cs u l p h o n a t c* water A.sidalkitbenzentt sulfbnik * natriutn hidrok.sidn )

20

nqtrittm ulltilhen:cttcr sul.fbnult

uir

Why dctelgcnts morc cfl'cctivc than soaps? Kenupakah detergen lebih berkesqn berbqnding clengansabun'/ A

Detergcntsarc biodcgradablcwhcrcas soapsal'c l.lollbiodcgradblc. D eterge n b o l eh t er b i od egra d as i ntcutcrko l e sq bun t i clo k t er b i oclegru d o s i.

B

Detergentsreclucethe surflce tcnsion of rvatcr,whereassoapsdo ntlt. Detergen rnerenclqhkctnketegcrrtgunpermuktrttn air munqkulcr soltun titluk tttat'entlthkutt kelcgungun permukuun uir.

C

Detergents clo not fornr scut't'rin hard water, whereas soaps clo. Detergen ticlak mentbentuk ke:kotclitlqlqm air liat tnanctliulasultun trterrrhenlrtltl
D

Detcrgentsarc soluble in grcasc,whercassoapsarc insolublc itt grcasc. Detergen larut dalem gri,s ntartttkale sabun /idqk larut dalam gt'is.

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454U1

of atomZ. 21 Diagram4 showsthc clcctronarrangement Rcyah4 menuniukkaltsttsunanelektronbagi atom Z'

Diagram4 Ru.juh4 IJorvmanyprotonsaretherein the nucleusof atomZ'l Ileroltakahbilangunproton .1'angterdapatdalam ntrkletrsutom Z? A2 B3 C5 D7 22

Which nredicinecan relievea hcaclache? Aptrkuhubul yang bolch melegakansukil kepulu? A Aspirin .4.spirin B Cortisotr Korlison C Barbitr-rratc llurbilurul D Streptornycin Strcptomisin

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SULIT

454U1

to dctcnnincthc cmpiricalfornrulaof mctal 23 Diagram5 showsa part of sct up apparatus oxide. Rajah 5 menunjtrkkon sebahctgictn duri reulasuntukmengenctlpasti lbrntulu empiriksbugi oksidaloqant.

Diagranr5 lla.ioh 5 Which o1'thernctaloxiclecatrnotbc uscclby this methocl'? kuuluh ini.'/ Oksitlalogom vung munoliahtiduk bolehclitentukonmenggttttqkan A B (l D

Zinc oxide Zink oksicltt L c a d ( l l )o x i d c Plumbunt(ll)oksidct ll) oxide Copper( Kuprum(ll) ctk.sicla l r o n ( l l l )o x i d c Ferunt(ll) r.tksidtt

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ST]LIT 24

4s4rlr

Diagram6 showsthe electron arrangementof a compound formed betweetr atom X and atorn Y. Ra/ah6 menuniukkansusunan elektron bagi ,sehatianyqng terbentuk di anttrrct atom x dan qtomY

Diagram6 Raiah 6 is trueaboutthis compound? Which of the followingstatements berikut benar tentangsebatian ini pernyatacur Yangmanc*ah cli antara A B C D

It is an ionic compound. Ia merupakansebatianion The compoundconductselectricity. Sebatianini boleh mengkonduksikonants elektrik The compoundhashigh meltingpoint. Sebatianini mempunyaitukat lebur yang tinggi The compoundis formed by the sharingof electrons. Sebqtianterbentttkmelaluiperkongsianelektron

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Diagram7 showsthe sctup of the apparatus tbr the elcctrolysisof moltenlcad(ll) oxiclc. Raiah 7 menunjukkansusLtnan radas bagi elektrolisisleLturonplumbum(ll) oksida.

Diagram T Rajah 7 What are the products fonncd at the anodc and thc cathodc? Apakuh hasil.tang te:rhentttkpudo anod clun ltaknl?

A

B C

D

Anode Anod Lead Plumbunr

Cathode Katod

Oxygen Oksicen Hydrogen I Iidrogen Oxygen Oksiccn

Lead Pltrmbum

Oxygen Oksit!en

Oxygen Oksicen Hydrogen Hidrogen

26. Copper (ll) sulphatesolution is electrolysedusing copper electrodes.What can bc observedat the anodeand cathodeafter30 minutes'/ Larutan kuprum(ll) sulfat dielektrolisiskanmenggunakonelektrod larpntm. Apukuhyuttg diperhatikanpada anod dan katod selepas30 rninit'? Anode

A

Clathodc

Copperplatebecomesthinner Platkuprummeniadiniois B Copperplatebecomesthinner Platkuprummeniadinipis C Copperplatebecomesthickcr Platkuprummeniaditebal D Gasbubblesare released Gelembung-gelembuns sasterbcbas

Copperplatebecomesthicker Platkuprummeniaditebal Gasbubblesarereleasecl Gelembune-selembuns sasterbebas Coppel platc bccomcs thinncr P I a t k u p r u r nr n e n i a d in i p i s

I

Coppcrplatebecomesthicker Platkurrrurnrncniaditebal

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(15)

strr,rr

usingcarbonclcctlode' of elcctrolysisof a sttbstance 21. Tablc2 slrou,stlreobscrvarion elektrod bcthttnmenggunctkan sttctttr elcktrolisis bctgi petrtet'lratictn Z ntentutjukkcut Jctclttctl kurbctn. Elcctlodc Elclitrcd Anode Anocl Clatlrode Kotocl

Observlrtiotl I'enrerhatic.rn

@

G crsb c rvt,a r n a ktt n ittg k eh ij ttt tcrtt t cr h c b ctt ' p o p ' s o u n dt s r e l e a s e t l A c o l o r l e s sg a s w h i c h b u r n s r v i t h a )'iI9!19!'lf9!!! Gtts ya ng r i i a k b erw a r n a tl a n t9I!!!t,:49!8!!!l!f1

Tablc2 Jadual 2 The elcctrolytenraYbe EIekn'oI i t itrunttngkin A

acid Dilutchydrochloric lsit.lhiiroktctrihcuir

potassiumchloridesolutiorl. - Conccntrated B Lartrtankctlittmkloritla pekut L n u 28

Copper(ll) chloridesolution. Lurulon kupntm (ll) kloritla magnesiumbrtlmiclesolutiotl Concentrated Lut'tttttrtntagnasitttttbt'otrtidc1x'kttl.

W h i c h o l ' t h e f o l l o w i n g s t a t e t n e n t c g r r e c t l y c l e s c r i b eas s t r o n ga l k a l i ' / Antttro J)et'n))olaanberihft, t'ang nranakah betul tentang olkali kual / , I ,, " ,I rI I, tV A B C D

llas a low pH value rcndult Nilui pLI 1,a11g l o t t i s c sc o r t r p l c l c l yi t t r v a t c t ' lllcttgi,,rt clettgrttrlt'trgkup tlalam uir H a s a l r i g h c o n c c n t r a t i o tol f h y d r c l x i d ei o r r s Iletttltutt.t'rtikepekutan ion hitlroksida 1'ong tinggi Exist as ruolccltlcs in watcr lltjtttlsebugui molakul daluttt uir Iandll I tlqn ll IandlV I dan lV II andIII ll dan lll III andIV Ill r/arilV

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(16)

454U1

Diagrarn8 showsa nrethocl
S o l u t i o nY LorutctnI' SolLrtion X Lanrlan X -....r)

Salt Gurant

Saltcr-ystals M i x i r r gt w o s o l u t i o l t C)ampuru n tttru Iutu I utt

F i l t c ra n dr i n s c 'l urus dun bilus

Dry Kcrirtgkun

Diagramfl Rujalt 8 What is the type ol'the reactionshoun in I)iaglarntl. Apakuhjcnis tincluk bulus ditunltrkkun clalumRujuh tl A

Neutralisatiorrreaction Tin
B

S u b s t i t u t i u o r cr u c l i o n 7'indakbalus ltcnukcrrgunliutt

C

Precipitationreaction Tindok baIus pemendakun

D

Additionreactiotl Tindak balas penuntbuhun

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454111

30 Diagram9 showsthe stagesI, II, III and TV in the ContactProcessduringthe prcparation of sulphuricacid. melului Rajah 9 menunjukkanperingkat I, ll, III dan lY bagipenvcdiuan usitl sulJilrik ProsesSentuh. S l-----'

SO: -l!--+

SOr

III ,

HzS:O;

IV,

H:SOq

Diagram9 Rajah 9 Whichof thefollowingchemicals is uscdat stagcsI and IV? Antoro bahan kimiq N I I Q berikut. vans manakah digunakanpaclaperingkut I tlan pcringkat lY'1 IV A o: HrO B SO, Or HzO C Ot D HrO SO,

3 l Diagraml0 showsthe structuralfbrrnulaof a carboncolnpound. Rajoh l0 menunjukkanJbrrnula struklur bctgisuatusebaliortkorbon. HHO

HH

ttltrl H-C-C--C-O-C

C-FI

trtl

HHFI[{

Diagraml0 Rajtth l0 The compoundis producedby the reactionbetween Sebeilianini terhasil daripada tindak balas antaro A B C D

ethanolandpropanoicacid etanol denganasielpropanoik ethanoland butanoicacid etanoldenganasid butanoik propanoland ethanoicacid propanol denganasid etunoik butanolandethanoicacid butanoldenganasid etanoik

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454U1

r c t r v c c nc a l c i u r r rc a r b o n a t ca n d h y c l r o c h l o r i c 3 2 . T h e e q u a t i o nb c l o r v r c p f c s c n t st h c r c a c t i o r b acid. Par.sttnrrtcrtt di lturt,trhntcv'rtlrili tintloli holas onlut'tr kal.sitrn korhonul tlattcdn usicl hiclroklorik. ------> CaCl:(aq) + + tlro(l) CO:(g) CaCOr(s) + 2ilCl (aq) W h i c h o f t h e l b l l o r v i n g g r a p h ss h o w st h e c h l r n g e so f v o l u m e o 1 ' c a r b o nd i o x i d e a g a i t r s t thc tinrc of rcaction'l gcts' Anturu gra.f'berikrt, t:(lttg monakult hetttl bugi ntenurjukkon perubohuu is'i1ttrcltr lrut'bon clioksidctte'rltaclaptnqsq tittclqk bolus'l

VolumeCOulcm3 lsipachrCOzlcmr

Volunre CO3/curl Isipatlu CO:/cur]

Tirne/rnin h'lusolmin

Tirne/nrin Mu,rulrnin Volurnc CO2/cnt Lsitrtcrclu COz/cm'r

C

Timc/nrin Masuht'tir'l

D

Voltule COl/cml Isilxrtlu COz/crnr

Tin.re/rnin I4usulmin

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4s41t1

(19)

sUr-IT

T h e l b l l o r v i n ge c l u r t i o r r sr e p r e s e ntth e d i s p l a c c r n e t r tc a c t i o t r sb e t u ' e s t r l r e t a l sP . Q r r n cIl { . Persomaen hsriktrt mev,akili tintluk holas penl'e.\(l'ett Qtttut'Qlogunt P, Q rrrrl It. Reactioul Tincluk bllqs I

:

P

+

Qt'

Reactron2 Tinduk bqlas 2

:

R

+

P2*

-)

P2'

+

a

Il2'

-

P

is tfuc about thc rcaction'/ Which of the fbllou'itrg statclt-tctlts .4tttttr.uberikut pernl)dte(tn 1,utrgrrtcutukultberrur tetttong litululi bulo's iltil A

than Q P is urore electrcltregative P lehih eIcktrottegatil claripcrclu()

B

P and It are oxiclising agents P dun R nrertrltokan ogen pengoksiclucttt

C

T h c c l c s c c u d i u go r c l e ro f n t c t a l s 'r c a c t i v i t yi s R ' Q ' P ntentu'un kc'reuktifan logum lrrlrrll R' Q, P Str.strnon

D

P r ' a n d Q r ' a r e r e d u c i n ga g e n t sl v h i l e R r ' i s o x i d i s i n g ^ i t g c r t t P:- tlun Q2-ntcnrpukdn ogcn permruilon monukula R" nrcrtqrukutt (tgen pcngok'siduun

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1s4ur

of clcctrons thatis uscdto studythc transl-cr arrangcl'ncnt thc apparatus 34 Diagrarnl1 shor.vs at a distance. .tLtsunett rudus.t;uttsdigunukununtrtkrnengkuiiperttinduhttn Rujuh 1l nrenunjtrkken elelitntnytadusuttr.jurak.

('arbortrod X Ilotl kurhttnX l r o n ( l l ) s u l p l r a tsco l u t i o r t Lu rtrton li,rurrr(| I ),strIlh t

t

,l 't

-{ j

('rrbon rod Y llod lturhotr \ Acidilicd potassittttt . i i t h n , r t l r t e ( \I ) s ( l l t r t i o r r l t t t : t tk t t l i t r t tJt i A t t t r r t t t t \ \ ' l l ldt D i l L r t es' L r l p h u r i ca c i c l Asil .suI/ttrilt cttir

D i a g r a r nl l Ikluh | | What colours can bc otrscl'\,cdin tlre solutiousat carbon rod X artc'lcartlorrrttcl Y at tlrccnd of thc cxpclirncnt'l Apaltult wornu.y(tns tloput diperltolilidti dulant lorrrlutt-lurrrlort di rocl kurbon X dun rod karl>onY pctcluakhir ekspat'irnanitu.

A U (l D

RoclX Ycllow Kuning Ycllorv Kunin54 Crccn LIilou Grecn I I ij cttr

Itocl Y C'cllourlcss Tiduk harwurno Grccn I{ ij cttr Olangc Pet'ang Purplc Ungu

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454t l

35 The followingequationshowsthe reactioubetweenAg* and Cl- ions. anture ion Ag- dan ion Cl- . Berikut edalahpersatnaanbagi tindakbale.s Ag* +Cl

---+AgCl

AH:-65kJrnol-r

Which of the tbllowing is tme aboutthe above equation? '? Antara berikut yang manakahbenar tentangpersamaanclictttts A

reactionoccurs Endothermic ql. ttus endotermik berIuku Tindakb

B

Heatis releasedto the surroundings Haba dibebaskanke persekitaran of the product decreases The ternperature Suhuhasil tindakbelasberhrang

C D

when I moleof silverchloride is fornred. 65 k.l of heatabsorbed 65 kJ haba di.serapapahila I mol argentumklorida terbentuk.

Y to form a compoundwith the with 63.5g of elernent 36 9.75 gof elementX reacted fornula XY2. What is the relativeatomicmassof elenlentX?. [Giventhatthe relativeatomicmassof Y=127] 9.25g trnstrrX bcrtindakbttlasdengun63.5g ut'tsurY unluk mcmbcnluksalu 'tcbuliun yeng memptrnyai.fbrrrula XY:. Beropakahjisim qtom relatiJ unsur X? fDiberi.jisintutom relatd Y: l2n ^ f\

aa :J

839

c40 D88

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sULrT 37

4s4v1

Thc fbllorvingccluation showsthc dccornposition lcactionof lead(ll)nitratewhenhcatedat roomterlpcratlrreandpressure. Pcrscrrtttrttt'r ltcriliut nrcnunjukkttntintlultltulaspctrgut'uinuplurnbum(ll) ttitrul ttpabila poclo stt/rtrdcrntekurtonbilik. clipono.skun 2 Pb(NOr)z ---------------) 2PbO + 4 NOz a Oz Whichof thc follorvingis tluc rvhcn0.1 rnolof lcad(ll)nitrateis dccorrposcd'i ''t c a s sN : : 1 4 , O : l 6 , P b = 2 0 7a n d I m o l g a so c c u p i etsh ev o l u t n eo f 2 , 1 d m a I R e l a t i vaet o r n i m roonrteurperature andprcssure] Anluro.i'ttrt{berikut,t,ttngrtranokctlt benoropctbilaI ntol plumbum(ll) nitrut tertrrai'? O : l 6 , P b ' 2 0 7 c l u t r l m o lg a s m e n e p u t i i s i p a t l u s e b c r n t , u k 2 4 , l n / lJisimutorttrcluli/:lV:14, puda.suhudan tekurtunbilik.l A

44.6g of lcad(ll)oxidcis fbrnrcd. 44.6g plunrbun(ll) oksiclutcrhatrtuk.

B

4800crn'rof nitrogenclioxicle is givenoff. 4800cnt-'gtt,snitrogenclbksiduterhchus

C

2.4 dn3 of oxygcngasesis givenotf. 2.4 drrt gosok.sigcnterbebqs. 4 . 1 6g o f l e a d ( l l ) o x i d ies f b r n r e d . 4.46g trtluutbtutt(I I) oksi du Ierbentr rk.

D

38

0.65g of ziucpowderrcactswith excesshydrochloric acidto procluce hydrogengas. 0.65g serbukzink bcrtinclukltulus dcngunu.s'idhidrcklorik ltarlebilton unltrkncnghusilkun gcrshidrogert. Whichof thc follorvingis tluc aboutthc rcaction? Pemyataan rnanakah benartentangtindakbalas'/ and 24 dnrrat roornternperature [RAM: I{-l.Zn-65, Cl--35.5anclI mol of gasoccupies prcssurc] I Il lll lV

-----------> Zn2' Zn + 2H' _ Volurneof gasreleased is 120cmj Massof thesaltlbrrnedis 1.36g This is redoxreirctirrrr

A

I a n dI l o n l y

B

I anclIII only

C

l , l l l a n cllV o n l y

D

II, III andlV only

+

H2

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qILLlr 39

what can be deducedfirnr the synrbol ;l ,a.t'l :,1. Al'? Apakah)'cmg daltat clisimpttlkctncluri svthol atolll is 2.u.3 Tltc clcctron arraltgclllcntof irluulitlit-ttl.l I eleklron bagi utom alttnritritrntitrlalr ).8.3. Susunctn II

A l u m i n i L r u a t o m h a s l 3 p r o t o n st t n d 2 7 l l c L l t r o n s . Atom trluntittitunmempttrnt'aiI 3 pt'olon tlart 27 nctttt'ott.

III

A l u n t i n i u m a t o t l h a s a p r o t o n t r l t t t t b eor f 2 7 a n d l 4 n e t t t r o n s . rtottrbot'proton 2Ttlttn I I rtatrlt'Lttr. Alotrr ctluntittiutttttrenttrttrtr.t'ui T h e t o t a l n t t t l b e r o 1 - p r o t t i na t r dt l e u t r o t .t tl l ' a l u m i u i t r r l a t o m i s 2 7 ' Jtmluh hilangan prolon don neutron ttlrtm altrntirtittm ialoh 27'

lV A B C D 40

4 5 1 1I I

l a n c lI I i II and lV II and lll IandlV

Diagranr [2 sholvs tltc clectron arrllnsemclltof ion T' elckttttn lxtgi iotr T Ruiuh l2 mentrnitrkkdn,rtt.\ttttutl

D i a g r a ml 2 Rcloh 12 Whereis elenrentIplaced in the PeriodicTablc'/ Dimunakthun.surT tlilenrputkandi dttlum Juchul Berkrlu'l Group Kuntpulan

Period Kula

TJ

l8

C

2

2 ) 18

D

I

t7

II

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454ur

Diagraml3 showstheformationof sodiutnion. pembentttkanion natrium. Rajah 13 ntenunjukkan

--).

Diagraml3 Raiah 13 Whicholthe followiugstatements aretrue? Ken.vatcttrrt bcr i k.rt yr.tng menekoh bcnttr ? Sodiumatom hasan unstablcelcctronarrangcment. Aktm nulritrmnlempun.vuisu.sunan elcktronyung titluk stubil as in neonatonl. Sodiumion hasan octetelectronarrangement I1 gasncon. Ion natriunrmempunyai clcktronoktctsc'pcrti susunan Sodiumatomdonatesan electronto fbrm a positivechargeion. III Atom nutrium mendermqsttttrelektronrrntttkmentbentukion hert'asltositi/ aton-rs to tbrrn ionic compounds. Sodiumatomreactswith non-metals I V Alom nutritrmbertindukhula,sdengunuton bukunlogunt mcmbcntuk:;ebutiunion A

cl D

I and III only I dqn IILsuhulcr II and III only jcr Il dan lll ,sahu I , I I I a n dl V o n l y jct I,llI dun IY scthu I , I I , I I I a n dl V o n l y I, II, Ill dun IY scrhuict

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tbr thrcesimplcvoltaiccclls. 42 Table3 showsthercsultof an cxperinrcnt Jadual 3 menunjukkankeputttsctnsuQtueksperimenbagi tiga sel ringkcrs. Positivcterminal

N e s a t i v et e n n i n a l

w

X

Y X

X Z

Voltase(V

0.3 0.8 1.9

Table3 Jadual 3 scrics in dcsccndingordct'of of thc nretalsin thc clcctrochcrnical Thc arrangcnrcnt is clcctropositivity dalam.sirieleklrckimicrntcngilul logunt-logommengikutlieelelttropositifon Srr.strnctn urutqnmenurLtnqdalah A B C D

W,Z,X,Y Y,W,X.Z Y,W,Z,X Z,X,W.Y

aboutthreesirnplcvtlltaiccell. 43 Table4 showsinlbrnration Jaduetl4 menuniukkanmaklumctttentangtiga sel ringkas. Voltage(V)

P

Electrodes used Iron artdZinc

o

Zinc and rnasucsiuttt

1.6

Copperandmagnesium

2.6

Voltaic cell

R

0.2

Table 4 .luduql4 What is the poterrtial clifl-elenceof the voltaic cell which cotrsistsof copper atrcl iron electrodes? '? Apukah niltri t,oltun ltugi sel yung mengandungi elelitrocl furprum clunJ'erunt A

0.4

B 0.6 c 0.8 D 2.4

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ST]LI'T

T h e e q u a t i o ns h o w s t h e r e a c t i o nb c t r v e e ns u l p l r u r i c a c i d a r r dp o t a s s i t t t lht y d l o x i d c . Persqntaan merumjukkan tindakbelas di antqrct crsiclstrllirril; dutt kalirrttt lticlroksidq. H:SO4 + 2KOH ------+ K2SO++ 2H:O W h a t i s t l r c v o l n n r c o f 1 . 0 n r o l d r u - rp o t a s s i u nhr y d r o x i d es o l u t i o nw h i c l t c a l l n c u t r a l i s c s 2 5 . 0 c n i l o f [ . 0 m o l d m - ] s u l p h u r i ca c i d ? Bertrpukcthisigtdtt 1.0 nnl drti'' lrtruttrn kulitun hitlntk:;itlu )'crng boleh nenetrlrulkurt 't\ 4 t:ryt't1.0 molcln{r usid.sulfin'ik ? A B C D

45

1 2 . 5c m r 25.0 cn-rr 50.0crn' 70.0cnts

cltloridc You arc rcquircd to vcrify thc cation and anion in a satttplcol-anttnottit"tttt saltsolution. What substaltcectltt yotl Llseto verify thc caticlttatrclarliotr'/ Andu dilichcndulti ntcnge.rulthctnkrrtiotr dutt union dulunt.sdltt sotndl)ul lorulcut gdrottt a nrmorti tr rttlil rn'id a. Aptakuhbcthttn.t,trngundtt bole'hgunukon trnltrk tnengc:;ahlurtrkutiott tlun rtttion?

A

B L-,

D

Cation Kotion Nesslerreagent Rettscn l,,lc.ssler

Nesslcrreagcnt Rt'usanlVcsslcr Potassiumthiocyanate Kulhtnrliosiunctt P o l a s s i u mt h i o c y a n a t e Kuliunt lio.sianul

Anion Anion Dilutenitricacidandsilvernllrate nitrat Asiclnitrik cuir don orgenttrnts' acidanclbariumchloride Dilutehydlochloric Asiclhitlroklorcihc'uirclunbrtriLrntkloridu DilutenitricacidandsilvcrttitrateAsidnitriA cuir dun ur{qtltntts'

ni!t'ttl

D i l u t c h y d l o c h l o r i ca c i c la n d b a r i u n c h l o r i c l c Asicl hiclrokloraik t'uir clun buriunr ltlttridtr

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of hydrogen 46 Table5 showsthc total volumeof oxygen,collectedin the dccornposition peroxidecatalysed oxide. by manganese(lV) Juduel 5 menunjukkanjumluh isiltuchroksigen.),ungdikunprl dulun pengttraian hiclrogcn peroksielayung elimongkinkanoleh mungun(lV) oxitla. Timc (min) Musa Volumc of gas. Isipadu scs (cm')

0 0

2

I

I t.20

23.60

-l

29.70

5

i

+

31.40

31.40

Table5 Jacluul5 What rs the averagerate of reaction Beropttkuh litrdtrr titrduk hulus purota? ( ; . 2 8c r r r rr n i n - l A I

-l

B

/.6) cn) nlln

C D

9 . 9 0c m ] n r i n - r I 1 . 8 0c m rm i n - l

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154rl r

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STJLIT

for an experintcntto dcterrllincthe latc of Diagranrl4 sholvsthc setup of the apparatus acid' and sulphuric thiosulphate sodium reactionbetlveen trntukmenenlukan kuclurtintluk hagi ekslterimen racltts .\u.tunen Ra.jahl4 menrtnjukkan .sullirrik. asid dengon halas anteva natriuut tirt.sulf'at

solutionand Sodiun thiosulphate sulphuricacid Nutrium liosrtlfltldun usiclsulfttilr Mark X TunduX

Whitc paper Kcrtustrtulih Diagraml4 Raiah 14

W h i c h o f t h c f b l l o w i n g c o m b i n a t i o no f t h c c o n d i t i o n st a k c s h o r t c s t i r t r ct b r t h c n t a r k X to disappearfiom sight'/ Antarct kombinusi keadaan berikrft "vctngmctrutkuhmen5lumbil ntusa paling 'sittgkot ttnttrk tanclaX hilang dcu'ipadapenglihatan?

A

B

Sulphuricacid Asid sullilrik Conccntration Volumc Kepekutun Isipudu (moldm-r) icms) t.0 5

5

1.0

l0

0.5 0.5

C

D

solution ] SodiurnThicrsulphatc tiosul/at Lqntlan nl triun -C-"*t-rt-tron-.l Volumc Kcpelulun Isipudu ( m o ld m - ' ) (c-') 0.4 50

50 50 45

0.4 0.4 0.4

Terntrreraturc Strhtr

("c) l0

,+0 30 __ 10--

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. of thrcealcohols 48 Table6 showsthehcat of combustion Jtrduql 6 menunitrkkan huba ltentbak(tran bagi tiga alkohol.

Alcohol Alkohol

H e a t o f c o n t b u s t i o n/ k J m o l l IIttbtt pc'rtrhtrktrran/kJnol

- 7t 0 t370 -2610

CHIOH

C:[tsOH C+HvOH

Which of the following factors increases the heat of combustionof alcohols ? '/ Antarq.fqktor berikut , yeng monukqh menantbehkcuthaba pernbakat'an alkohol A

Size of molecules decreases Saiz molekul berhrctng

B

Number of carbon atoms per molecule increases Bilangun trtom karbon per molekul berl(Inlbah

C

Number of oxygen atoms per molecule incrcases Bilangun alom oksiS1enper molchtl bertqmbah

D

Number of hydrogcn atoms pcr urolecule itrcrcases Bilungan atom hielrogen per molektl berkurung

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STILIT

49 Diagraml5 showsencrgyleveldiagramsfor the reactionbetween hydrochloricacid andpotassiumhydroxide. Raiah l5 ntenuniukkan gambarajah aras tenaga untuk tindakbqlasanturtt osicl hidroklorik dan kulitrttt hidroksida . L,nergy Tenager

Diagraml5 Ruiuh l5 when50 cm3of 2 mol dm-l hydrochloricacid Calculatethe amountof heatreleased hydroxidesolution. reactswith 50 cml of 2 rnol dm-3potassium Hitungkanjumlah haba yang dibibaskan opnlih 50 cm] asid hidroktorik 2 mol clni'| bertiidak 6alas dengan'50im3 lamton katium hiclroksida2 ntol tlnfl A B c D

5.40 kJ 10.8 kJ 27.0 kI 54.0kJ

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4s4rtl

, 7 H 1 6 i n c x c e s so x y g c n . c q u a t i o ns h o w s t h c c o m b u s t i o no f h e p t a t r cC Thc follo'uving dulqnt oksigen CtHto heptana, pembakaran Persqntaan beriktt menttnjukkan herlebihan. CrHro +

llO:

+

7CO: +

8HzO AH=-55l2kJrnol-r

n f h c p t a n ci n c x c c s so x y g c n r e l c a s c s1 3 7 8 k . l c n c r g y l n a 1 e x p c r i t r c p tt h c c o n t b L l s t i o o What is the mass of heptaneused'/ Dalctm sutrreksperimenpembakaron heptana dalant oksigen hcrlebihun membebaskqn 1378 kJ tenlgl. B er ap ctkah .i i s i nt h ep t crn a v'ctng d ig un u kan'? f R c l a t i v ca t o n r i cr r a s s : H : l ; C : l 2 ] : I ; C : 12 ) Llisint atom relatil: H

A B C D

2 5 . 0g 3 6 . 0g 7 7 . 0g g 8t3.0

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SULIT Kimia Kertas 2

Nama pelaiar :

September 2009 2% jzm

Tingkatan

JABATANPELAJARANKELANTAN DENGANKERJASAMA PERSIDANGANKEBANGSAANPENGETUA.PENGETUA SEKOLAHMENENGAII MALAYSIA CAWANGANKELANTAN

PEPERIKSAAN PERCUBAAN SIJIL PELAJARAN MALAYSIA 2OO9 KIMIA KERTAS2 Masa: f)ua JamTigaPuluhMinit JANGAN BUKA KERTAS SOALAN INI SETIINGGADIBERITAHU Arahan: 1. Kertassoalanini adalahdalam dwibahasa 2. Setiapsoalanmengandungi keduadua bahasaInggeris dan bahasa Melayu.Bahagianatasdalambahasa Inggerisdan diikuti di bawahnyaoleh bahasaMelayu 3. Calondibenarkanmenjawab keseluruhanatau sebahagiansoalan samadadalam bahasaMelayu atau bahasaInggeris 4. Calondikehendakimembaca maklumatdihalaman2.

Kod Pemeriksa Bahagian

Soalan I

2 J

A

A T

5 6 7

B

8 C

9

Markah Penuh

Markah Diperolehi

l0 10 10 l0 9 ll

20 20 20

_ r0 _]-_ 20 umlah

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INFORMATIONFOR CANDIDATES I . This questionpapcr consistsof thrcc scctions:Section A, Section B and Section C. 2.

Answcr all qucstionsin Section A. Write your answcrsfor sectionA in the spaccprovidcd in the qucstionpapcr.

3.

Answer one question liorn Section B and one questionfrom Section C.

4.

Write your answer fbr Scction B and Scction C on the "helaian tambahan" .

5.

The diagramsin the questionsare not drawn tcrscaleunlessstated.

6.

Mark allocatedfor each questionor part qucstionarc shown in brackcts.

7.

The tirne suggestedto answersSection A is 90 minute, Section B is 30 trinute and Scctiort C is 30 minutc

8.

scientillc calculator. You may use a non-prograrnrnable

MAKLUMAT KEPADA CALON l.

Kertas soalan ini mengandungi tiga bahagian: Bahagian A, Bahugiun B don Buhugiun C.

2.

Jawab se,nuasoalun dalam Bahagiun A. Tuliskttnjawopan unda unluk Bahugiun A dulutn ruang yang disediakan cJalamkertu.s:;oalan.

3.

Jawob stttu soalun daripatla Bahagiun B dun sattr soalon daripadu Bahugian C.

4.

Tuliskan.jawapan anda bagi Bahagian B dan C padct helaian larnbahon.

5.

Rajah yang mengiringi soalan tidak dilukis mengikut skala secuali dinyotaketn.

6.

Markah yang diperuntukkan bagi setiap soalan qtau ceraian soalan dituniukkan dttlttnt kurungan.

7.

Masa yang dicadongl:an untuk menjawab BahctgianA ialuh 90 minit, Ilohagian B -10ninit dan Bcthagian C iuJuir -i()ninit.

8.

Anda dibenarkan rnenggunakan kalkuletor saintfik yang liduk bolch diprogrontkun.

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SectionA [60 marks] 160markahl Answcrall qucstions ,lawubsenruu'sttulun usedto carry DiagramI showsthe informationabouttwo typesof solutionsA and B which are acid. out titrationwith hydrochloric jenis lartrlonA dan B yang digunakanunttrk maklunnl tentattgcluct I menttnjtrkkan Ra.iah menjalankcmpentitrQtdndengttnasid hidroklorik' Solution A Lartrtan A

: 5 0 c m ' ro f 1 . 0 m o l d m - ] s o d i u mh y d r o x i d e ,N a O H : 50 cmr natrhtm hidroksicla,NaOH I '0 mol dm-''

Solution B LttrrtlttnB

: 50 cm'r of L0 rnol dm-l atnmoniurnhydroxide' NHaOH : 50 cmr omntonit* hiclrok'siclu,NHlol1l'0 mol dm-'

DiagramI Rajah I (a)

(i) Whatarcthc typcsof solutionsA andB. lurulon A dan B. Apakuh.jeni,s I mark) ll rnarkahl ( ii) Statethe formulaof ion thatpresentin bothsolutions'/ N),atuk(tn./brmulaion vang hadir di dalam kedua-dualQrutan'/ ll mark) l1 markahl (iii) PredictthepH valueof SolutionB, if thepH valueof SolutionA is t 4 . Ranrulkannilui PH hugi Larulan B jika nilai pH I'arutan A aclnlah1 4 . fl markl l1 mevkahl

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(iu) Why thcreis differentin pH valueof SolutionA and B? Mengapakahterdapatperbezaannilai pH di antara Lanttan A dqn B?

12marksl [2 markah]

(b) Write the chemical equation between Solution A and hydrochloric acid. Tuliskan persamaan kimia antctra Larutan A dengan ol;icl hidroklorik.

1z-iaiil 12markah) acid,HCI solutionneededto neutralise thevolumeof 0. I mol clm-lhydrochloric ( c ) Calculate SolutionA. Hitungkan isipaclularutan asid hidroklorik 0.1 mol dm-l yang cliperlukttnuntuk LarutanA. meneutralkan

13marksl [3 markah)

Diagram 2 shows part of the Periodic Table of the Elements. C, D, E, F, G, and H do not representthe actual symbol of the elements. Rajah 2 menunjukkan sebahagian daripada Jadual Berkala Unsttr. C, D, E ,F,G dan H tidak mewakili simbol sebenar unsur-unsur berkenaan.

Diagram2 Rajah 2

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Usingthe lettersin the PeriodicTableof the Elementsin Diagram2, answerthe following questions. b"rgon menggunakanhuruJ--huyu.rangterdapatdqlam.IaduAlBerkalapada Rajah 2, j awabsoalan-slalanberikut. (a)

Statethe positionof elementC in the PeriodicTable. Nyatakankedudukanunsur C dalam JaduQlBerkala. [2 maik] 12markahl

(b)

ElcmcntD rcactwith waterto producealkalinesolutionand hydrogengas. (JnsurD bertindek balas denganeir untuk menghasilkanlarulan beralkctlidan gas hidrogen. Write thechemicalequationof thereaction. Tuliskanpersamaankimia bagi tindak balas ini. 12marksl [2 markah]

(c)

D and G havethe samechemicalproperties. D dan G mempunyaisifat-sifat kimia yang sama. (i)

Which elementis morereactive? (Jnsur yang manakahyang lebih reaktiJ? 11mark) I markahl

(ii)

Explainyour answcrin (c) (i). Terangkanjawupan anda dalam (c) (i).

[2 marks] 12markahl (d) (i)

Whichelementis chemicallyinert? (Jnsuryang manakah lengai secarakimia ? 11markl I markahl

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(6) (ii)

Explainyour answerin (d) (i) Terangkanf awdp(utandctclalqtn(d) (i).

1 1t r r u lt, ) ll trtttrkultj1 (e)

S t a t eo n e s p e c i a lc h a r a c t e r i s t iocl:- e l e r n e n tIsI Nyalakansulu ciri islimewttunsur ft.

ll ttt,tt'lil | [ tttorliulrl

-)1

D i a g r a r n3 s h o w sp a r t o f t h c s c t u p o f a l l p a r a l u so 1 a - c l r c r ri rc a l c e l l . Rc1jah3 nrcnunjrtklicrnsebcthttgittncluripudu susuttenrutlu.; bugi .sucttuscl kitttiu.

Zinc plate / Kcpingan.:lrii

Colrlrcrplatc / Kcpittgotr kultrttrrr Pttrtrttspot I l)tt.:'trht'r'litut,!

Z i n c s u l p h a t cs < l l u t i o n Luulurt zink sulJht

C o p ; l e r I(I ) s L r l p h l t es o lr r li o n Itrt't tIctttli uprr rnt ( I [ ) .srrIf u t Diagranr3 I?t.riuh3

( a ) D r a w a c o m p l e l cs c t - u po f a p p a r a t u sf b r t h e c h c n r i c a cl c l l o r r [ ) i a q r a r r3r . Ltrkiskun su.\un(u1roda,s1:ung lengkt4t ltttgi .stl kittriultuclu llolalr 3. | | t t t t r r lI t | | trrurl'trltl ( b ) L a b c l t h c n c g a t i v cc l c c t r o d ca s ( - ) a n d p o s i t i i , ' c l c c t r o c i ca s { ' l - ) o n t h c c o n r p l c t e ( l c h c n r i c a cl c l l . Lctbelkunclcktroclncga/if',scbugui( - 1dun clcktrodpositif saktgdi ( t ) ltitcltt t'ttj,rlt.scl kimia vang lelah lengkup.

(c) Statetlreflow of electronfor thc chernical cell in diagrarn3. l,'lr,atakanarah pengttliran elektronbugi sel kintitt ltutlu tlttjuh 3.

l1 nturlil l\ nrurfurltl

ll murkl

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(1 ) (d) Whatis thc functionof the porotlspot uscdin theabovechclnicalccll? Apukah/imgsipasu berliang)'}angdigunakandalamsel kimia di atas? STILIT

ll markl ntarkahl

u (e) What can you observedat the negativeelectrode'/ tlpuktth yttng boleh ctnclaperhttlikan paclu elektrod negutiJ'?

l1 nturkl ll marktth) (f)

w r i t e h a l f e q u a t i o nl b r t h e d i s c h a r g e do f i o n s a t p o s i t i v ee l e c t r o d e . Ttiiskan persamaon setengah bagi ion yang clidiscrtspodo eleklrrtd positi/.

l1 murkf ll markahf (g) (i)

what will I f t h c c o p p c rp l a t c i n t h c c h c n r i c a cl c l l a b o v ci s r c p l a c c db y s i l v c r m c t a l , c e l l ' h a p p e nt o t h c v o l t a g er e a d i n go f t h e Jika kepingan kupntm di dalam ,salkimict tli atas digontikan dengon logam Qrgenntm,apakoh vctngberlaktr lrcpada nil(li t,oltQnyang alcan terhctsil.

ll murkl l1 markahl for your answcr. (ii) Give thc reasot.ts Bt'rikun scluh fiagi .,urr',r1'ununJu

ll mork) ll nurkulr, 'fablc clcctrodc (h) 3 s h o w st h c v o l t a g co f c h c m i c a lc c l l nsingmctalsA, B andC asthc logamA,B dan C Jadrral 3 menuniukkan nilai voltan hugi sel kimia menggunqkan sebagoi elektrod. V o l t a g c( V )

Pairsof mctal

J:pgt:sgr, tggglJB/C A/C

aibr,"plelJll) 0.1

I'ositivc clcctrodc

_Els!!te4]!,'L!1_

0.8

C C

Table3 Jqdual3

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Basedon thc information givcn, calcuiatcthc voltagc of a chemical cell using metal A and B as the electrodes, Berdasarkan kepada maklumat yang diberikan, himngkan nilai voltan yang akan dihasilkan oleh sel kimia yang menggunakan logam A dan B ,rebagai elektrod.

[2 marks] [2 markah) Diagram 4. I shows the set up of apparatusfbr an experimentto determinethe empirical formula of magnesiumoxide. Raiah 4.1 menunjukkan susunan radas bagi suulu eksperimenuntuk menentukan.fbrmula empirik magnesium oksida.

Li,-1 tDentitti.y.,

(-lnrcrble

Ivlagnesnrm ribb.:n hla nragne.num

ilfrrxgxirip3r:crr

D i a g r a m4 . 1 Rajah 4.1 (a) What is the meaning of empirical formula? Apakah mak ud formu I a empi r ik?

I markl fl ntarkahl

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(9) SULIT of thccxperiment. (b) Diagram 4.2showstheresults Rajah 4.2 menuniukkan keputttsattexperiment itLt.

Massof crucible+ lid Jisint ntangkukpijar -r penutttP

: 24.8Ro

ribbon Massof crucibtc+ lid + magnesiurr Jisimmangktftpijar + pentttttp * pitamagncsium

: 25.12g

oxide Massof crucible+ lid + magnesium piiar + penutltp + magnesiumoksida Jlsim mcmgkuk

: 25.28g

Diagrarn4.2 Rajah 4.2

(i)

Basedon Diagrarn 4.2, completeTable 4 and deternrinethe empirical formula of magnesiumoxide. Berclasarkun Rujuh 4.2, lengkaltkctn Judual 4 dan selcnrsnyu lentukan formula empirik bagi magnesium olcsirla: : [ R e f a t i v ea t o r n i cm a s s :O 1 6 , M g : 2 4 ] fJisim utom relotif. O 16, Mg 2al Elcrncnt LJnsur

Mg

o

Mass(g) Ji,sint Nurnberof moles Bilanganmol Sir-nplcstlatio of moles Nisberhringkas bilangan mol

E,mpiricalformula Iiormulu empiric Table4 Jctduol4 16murk's) f6 markuh) (ii)

Writc thc chcmicalcquationfor thc rcactionin theexperiment. Tulislranpersamaankimia bagi titrdak balas dalam eksperimenitu.

11murkl markah) 11

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(c) Why the proccssof heating,coolingandwcighingarerepcated until a constantrnassis obtained? dun pcnitnbangundirtlang.schingga.iisim prosespct ldnasan,perr')ejuka,r Mengapakah d ipe ro I ehi'? telap .va,1g

ll murk) nrurkult) ll (d) Why this cxpcrimcrrtis not suitablcto bc uscd to dctcrnrincthc cmpirical lbrrnula of c o p p e r ( l l )o x i d e ' i ekperinten ini tidak sesuai cligunakan rrnluk ntencnlrrkun.fbrmt.tloemstirik Me.ngatrtakah kupmm(ll) oksida't

LI t?rcrrKs ) ll murktth) Diagram 5 shows thc sct up of thc apparatusof an cxpcrinrcnt to invcstigatcthc lransfbr ol electrons at a distance. Solution X is an oxidising agent and turns colour from purplc to colourlesssolution after a few minutes reacted. Rajah 5 menunjukkan susltnan radas eksperimen bagi nengkaji peminduhctn elelrtrcn pctda sutu.jaruk. Larutan X ialah agen pengoksi.daan dan berlukar vnarnu dari ungu kepacla larutan lidak berw,arna selepctsbeberapa minit bertindak balas.

Carbon Karbon

Carbon Kurbon iodidcsolution Potassium Lqrulan kal ium iotlicla

x

acicl Dilute sulphuric Asiclsulfurik cair Diagram5 Raiah 5

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( l1 )

SULIT

The overall ionic equationfor the reactionis Persamaan ion keselnnthan bagi tindak balas yang berlaht adalah 2MnOa-+

l6H*

+

l0l-*2Mn2*

+

8H2O+ 5lz

(a) Statethe name of Solution X ltiyalukan numu larutun X

( l r) Cal :lte the oxidation number of manganesein MnOq-ion. I t, iungkan nombor pcngoksidaan bagi mangan dalam ion MnOq

11markl llmarkahl

[1 mark] llmarkahl (c) Statethc typc of rcaction that occursat elcctrodeA' Nltatakan jenis tindakbalas yang berlaku pada elektod A-

I markl llmarkahl ( t l ) Referring to the reaction that takes place at electrode B.

Menjuk kepada tindak balas yang berlaktt poda elektrod B' (i) Statethe observation? l{yatakon pemerhatian'/

[1 mark] llmarkahl (i i ) Writethehalf equationfor the reaction. Tulis setengahpersamaan bagi tindakbalas. ;,

Lt mqrK) llmarkah)

( i i i ) Explain the reactionthat occttrsin terms of transferof electron. Terangkan tindak balas yang berlaku dari segi pemindahan elektron-

[1 mark) ll markahl

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(12) SULIT acidin tltisexpcrimcnt. (e) Statethefunctionof thedilutesulphuric Nyatakanfnngsi bagi asid sulJirik cair dalam eksperimenini.

ll rnarkf llrnarkahl (0

In othereiperimentyou arc givenzinc strip,copperstrip,coppcr(ll)sulphatesolution andall apparatusrequircd. to investigatcthc transfcrof Draw a labelleddiagrarnto showanothersct up of apparatus electronat a distance. Di dalam eksperimenlain andq dibekalkandengankepinganzink, kepingetnkupnrnt, larutan kuprum(Il) sulfat dan semuaradasyang diperlukan. Lukiskansatttgambarajah berlabel untukrnenunjukkansusunanrados bagi ntcnliiasctt pemindahanelektronpada satu.iarak.

12marksl [2 markahl

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454112 (13) SULIT of analcoholin the reaction thecombustion cquation belowreprescnts 6 Thethermochemical air. Persamaan termctkimia ctibawah ntewakili tindak balas pembakurcut sttnttt ulkohol eli trderrcr. C+HqOH + 60: + (a) (i)

4CO2 + 5H2O

LH:-2679 kJmol-'

Statethe name of the alcohol in the aboveequation. Nyatakan name elkohol di clalam persamaan di ateu'

[1 ntarkl flmarkahl

' (ii) What is mcantby'AH : -2679kJ mol-r in thc abovccquation'l Apakahyang dimaksudkandengan'AH: -2619kJ tnol-'\' dalampersamaan di atas?

ll markl Imarkah) (b) 0.37g of thc alcohol that is natlcd in (a), uscd to hcat 500 g of water. 0.37g atkohol yang dinamakan di (a), digunakan unhrk memanaskan 500 g air. Calculate, Ilitungkan, (i)

thc heat rclcascdby thc alcohol in thc reaction. r] [ M o l a r m a s so f t h c a l c o h o l : 7 4 g n r o l haba yang dibebaskan oleh qlkohol itu dalqm tindQk balas : lJisim molar alkohol 74 gmoltJ

ll markl llmarkahl (ii) the temperature change of water expected in the experiment in (b) fSpecific heat capacityof water: 4.2 J g'' "C-'l perubahem suhu etir yang chjangkakan dalam eksperimen inilHaba lenlu air; 4.2 J g'' "C'')

12marksl [2rnarkahl

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(c) Drawtheenergylevcldiagramfor thecombustion of thc alcohol. lnkiskqn gamhar rclah ara.stenuguunlukStenbakqranulkohol ter.-ehut.

(d)

'l'ablc 6 s h o w st h c h e a to f c o m b u s t i o no f v a r i o u sa l c o h o l s . Jadual 6 menuniukkan hctbapembakqran pelbagai ulkohol. Numbcr of carbon atoms Bilangun atont karbon

) J

{+ j

Molecularformula Formulu molehul

Nameof alcohol Nama alkohol

CHrOH

Methanol Ethanol

CuHsOH c.r["l70t'l

Heat of combustion Habu pcmhakaran (kJ mol-')

-726 -1316

Propanol

C4II9OII

CsHrrOH

12mark,tl 12marlurh)

Pentanol

-2679 " " "J J-

-JJ

Table6 Jadual 6 (i)

Predicttheheatof combustion of propanol. Rqmalkanhabapembakaranbagi propanol.

11nturkl ll markah)

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Based on Table 6, explain why as the number of carbon atotns incrcasesso does the value of heat of con,bustion. Berdasarkan Rajah 6, terangkan mengapq apabila bilangun atom kqrbon bertambah nilai haba pentbakaranjuga bertambah.

12marks) 12markah)

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SectionB [20 marks] [20 markahl Answerany one question Jawabmane-manesalu soalan 1

W, X and Diagram7 showsthe symbolswhichrepresent threeelements, Rajah7 meru.rnjukkan simbolyang mewakili tiga unsur\N,X dan Y.

Diagram 7 Rajah 7 Basedon Diagram 7, answerthe fbllowing questions: Berdasarkan Rajah 7, jawub soalon-soctlan berikut: (a)

What is representedby number 12 and 6 in tlre symbol of elernentW? Apakah yang rliwakili oleh angka 12 dan 6 dalum simbol bagi un,surW'/

12 marksl 12 ntctrkultf (b) Draw thc structurco1'linakrur of thc clcr-ncrrt X using tho modern atornic model. Lukis struktur dlunt lrdgi trtt.\'i.u'Xdengan trrenggttnakanmodel atom utoden. f4 nrurksl [4 ntarkah) (c)

Atoms W and X can form chernicalbondswith atom Y. Alom W dqn X boleh membenltrkikalan kimia dengan atom Y. Statethe type of chenriculbond anclexplain how the bond is formed between: Nyulukunjenis ikctlan kimirr dan terangkun bagaintuna ikulun terbenluk onlora: (i) Atoms W and Y Atom\N dan Y (ii)

A t o m s X a n CY Alctm X dan Y

110murlisl 110rnarkahl

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454U2

Describethe differencesin meltingpoint or electricalconductivityof the cornpound formedin (c) (i) and the compoundformedin (c) (ii). Huraikanperbezaandalam takat lebur utau kekonduksianelektrik bctgisebatianyung terbentukd, (cXj) dan bagi sehatianyangterbentukdi (c)(ii). [4 marl<sl 14markahl

8

(a) Ethenegasis bubblethroughbrominewater. Gas etenadialirkan melalui air bromin.

(b)

(c)

(i)

What is the observationandstatethe type of reactionhappens? Apakahpemerhatiandan nyatakanjeni.stindak balasyang berlaku?

(ii)

Give the nameand draw the structureformulaof the moleculeof the product. Berikan nama dan lukis formula struktur bagi molekul hasil tindak balas. [4 marks] [4 markahl

A hydrocarbonZ contains82.75o/o of carbonby mass. Satuhidrokarbon Z mengandungi82.75%korbon mengihttjisim. [Rclativeatomicnrass:H:l , C:12] lJisim atomrelatif: H=1, C:l2l (i)

Calculatetheempiricalformulaof Z. HitungkanJbrmulaempirikZ.

(ii)

Determincthemolecularfomrulaof Z if rclativemolecularmassof Z is 58. Tentukan.formula molekul bagi Z jika jisim molekul relatif Z odakrh 58. [7 marksl [7 markah]

Comparethe propertiesof vulcanisedrubberand unvulcanised rubber. Bandingkansilat-si/Al getah tervulkandan getah tak lervulkan. Your answershouldinclude the following propertiesof rubber: Jcrwapananda hendeklahmengandungisifat-sifotgetah berikut: (i)

Elasticity Kekenyalan (ii) Strengthandhardness Kekuatandan kekerasan (iii) Resistance towardoxidation Ketahanan terhadap p engoksidaan Give the reasonsfor all the propertiesabove. Berikan sebabbagi semuasifat-sifat di atas. 19marksl [9 markahl

I Lihat Sebelah SULIT

PERCUBAAN SPM (2009)- KIMIAKERTAS2

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4511t2

( 1 8)

STII,IT

SectionCl [20 nrarks] l)0 murkuhl ,,1tt strar r/l/.t'ollc q tte.tt to t t .luwuh men d-nt(tt1u.sttlt r'srta Ittn (a) l.'ooclaclclitivcsarc chcruicalsthat ars uscd in processcdlbod' They l'tclpttr makc fbod last i , , l r g c r l. o o k b c t t c ra n t l t a s t cn l o r c d o l i o i o L l s . Stutc tlrc lbocl aclclitivcstltat arc sLritablcto Llcttscclfbr thc abovc purposcsa n d c x p l a i r r l r o t ' t h e a c l d i t i v c sa c t . hultan kimia yang tligunulun dolunt mukdnan .1ang IJLtlrttrtltrtttbttlt rtrukLrnttttrrtetrtrpttkcrrt dun lebih tliltt.rr.sc;;.ltt ntenolonc tncrtiuriilictnnttkunun Icrhttrtlttttttt, lielihttttrtt menurik .s'e tl u 1t.

digturcrkutt trttttrk tttitrttn di oltts don btrltutt ttrrnbrrJttrtolictttutt.t'(utg.r('strLti N1'rttttktrtt It:rutrgkun bttgttitrttttttrltultun itri herl itttltrli' Itr rtr,rr'lrr']

16 nrtn'liult) t t t a t l el i t t t t l I t i s t l l d . y c a r s l o r t y t h a n r n o r c i s ( b ) O L r r N u t i 6 6 a l M o n t r r n e n l i r r K r - r a l aL r - r r n p u r b e atrtilirl a n d s t r o l l g h i g h , s t i l l s t a n c l i n g i t i s b r o p z e . a n a l l o y o t ' s o l l p c r a r r c lu n t i l t o c l a y , lu tulrtrn enlpul lehih trmttr ltttltth Ttrutt ,\it,grtrtrdi KrtttlttLrrtultrtt'.strt/tthmenjtrntl;tnr bcrdiri mLt't^ih itt sekordtlg diltpt.ttrtit tlrrt.iltut.lu gctrtgsti,strultrcrlr.tihrpt'r.rtn dcrn schittg;4u li'gtrlt, litrtrt Lltrn tttcttttt'ik. (i)

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SULIT (a) (i)

(20 ) Refening to ExperimentII, statethe nameof acid T used' write the chemicalequationfor the reactionof acidT with magnesium. MerujukEktperimenll, nyatakannamaasidT yang digunakan' Tuli.skanpersamaankimia bagi tiruJakbalas asidT denganmagnesium.

454u2

[2 marks] 12markahl (ii) Draw an energyprofile diagrarnfor thc reactionin l0(aXi). On the energyprofile diagramshowthe:

Explainthe energyprofile diagram Lukis satugambarraiah profrl tenaguuntuktindakbulusdi l0(a)(i)' Pada garnbar raiah profil tenagaitu tunjukkan:

Jetaskangambarrajahprofil tenagaitu. |0 marksl 110markahl

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PERCUBMN SPM (2009)- KIMIAKERTAS2

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(21)

SULIT

454U2

(b) Thegraphin Diagraml0 showstheresults of Experimcnt I andExperiment II. Graf pada Rajah l0 menttnjukkan keputusan bagi Eksperimen I dan Eksperimen

II

Volume of hydrogengasicml Is iputlu gus hidrogen/cmr

ExperimentII

ExperimentI EksperimenI

Tirne/s Masa/s Diagraml0 Raiah l0 Basedon the graph: Berdasarkangraf (i) Calculatethe averagerateof reactionfor ExperimentI Hitungkan kadar tindak balaspurata bagi EksperimenI [2 marks] [2 markah] (ii) Explainthe differencein the rateof reactionbetweenExperimentI and ExperimentIl. Terangkanperbezaankadar tindak balas qntara EksperimenI denganEl<sperimenlI. [6 marks] [6 markah]

END OF QUESTION PAPER

Lihat Sebelah SULIT

PERCUBMN SPM(2009)- KrMrAKERTAS2

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STILIT Kimia Kertas 3 September 2009 l%jam

Nama Pelajar Tingkatan

JABATAN PELAJARAN KELANTAN DENGAN KERJASANIA PERSIDAN GAN KEBANGSAAN PENGETUA.PENGETUA SEKOLAH MENENGAH MALAYSIA CAWANGAN KELANTAN

PEPERIKSAAN PERCUBAAI\ SIJIL PELAJARAN MALAYSIA 2OO9 KIMIA KERTAS3 Masa : SatuJamTiga PuluhMinit JANGAN BUKA KBRTAS SOALAN INI SEHINGGA DIBERITAHU Arahan: 1. Kerlassoalanini adalahdalamdwibahasa kedua-dua 2. Setiapsoalanmengandungi bahasaInggerisdanbahasaMelayu. BahagianatasdalambahasaInggerisdan diikutidi bawahnyaolehbahasaMelayu menjawabkcselumhan 3. Calondibenarkan soalansamadadalam atauscbahagian baliasaMelayuataubahasaInggeris di membacamaklumat 4. Calondikehendaki lialaman 2dan3

Kod Pemeriksa Soalan

Markah Penuh JJ

JIJMLAH

12halamanbercetai<. Kefiassoalanini mengandungi I Lihat Sebelah ST]LIT

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(2)

STJLIT INFORN'IATION FOR CANDTDITES

l . T h i s q u e s t i o nt r r a p ccro n s i s l so 1 ' t r v oc l u e s t i o n sr \. I r s w e ra l l c l u e s t i o r t s . 2. Writs your ans\4'crsfbr Qucstion I in thc spaccsltror,iclcditt thc tlttcstiutll)rpt'f. . o l t l t t L t yL l s ce ( l t l l l t i o l l , 3 . W r i t c y o L l ra n s w e r sl b r Q u c s t i o n 2 o n t h e " h e l a i a nt l t t t b a h a t t " Y d i a g r a r n st,a b l c s ,g r a p h sa n d o t h c r s u i t a b l em c t h o d st o c x p l l i n y o L t ra l l s \ \ / c r . A

S h o w y o u r w o r k i n g , i t r t r a Yh c l p y o u t o g c t t n a r k s .

,5 l f ' y t l u w i s h t o c l r a n g ey o u r a n s \ \ r c l n- ,c a t l yc r o s so u t t l t e a t t s r v c tr l r a ty o i r h u v c d t l t t s . [ l r c r rr i ' r ' i t c thc ncw allswcr. tlor.'r'n 6 . T h c c l i a g r a u t isn t h c q u c s t i o l t sa r c n o t d r a r v t rt o s c a l ct t n l c s ss l a t c d . 7 . N I a r ka l l o c a t c df b r c a c h c l u c s t i o ro. r p a r t c l i t c s t i o ratt c s l t t - ' w tirn b r a c l i c t s . 8 . T h c t i r n es u g g c s t c dt o a n s w e r sQ u c s t i o n I i s 4 5 t t t i n L t l eisr n d Q u c s t i o n 2 i s ' 1 5 nrirrutcs. r)

Y o u n r a y u s e a n o n - p r t l g r a r n u t a b sl cc i c n t i l i cc a l c u l a t o r .

l 0 l l a n d v o u r a n s w e rs h e e t sa t t h c c l t d o 1 ' t h cc x a t t r i t ' t i t t i t r t t .

Marlis arvardsd

Miark

3 2 I 0

: T l r c b c s tr c s l l o l t s c Exccllcnt : An avcragercsponsc Satisfactrlry Arr inaccuratcrcspol.lsc Wcak No responseor wrong rcslloltse

Lihat Sebclah STII,IT

- KII\,IIA KERTAS3 PERCUBAAN SPI,,I(2OO9i

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(3)

SUI,TT T KEPADA CALON TTAKL LIX,TA

l. Kerlus soulun ini mettgundtrngi dtru soalun. Juv,ub .\emtu soulart. 2.

'fulis.jtnrupan

ltttgi Soulan I ddlom ruong.t'ong di,sadiukonclttlurnkerlct .goulon.

3. Ttrli.sjcttt'rtltunbogi Soalun 2 puclu kerlus heluiun ltrntbulrun)'ong tliserliukun. Andu boleh nrangguncrkonper,tanloan, rujah, jacrtnl, graf' c{ttn curu lctirt yttrtg .scsttui u n I trktnettj eI uskan .i au,apctn anda. 1. Tunjukkun kerja mengiro, ini memhunlu undu nendopulkun murkah. 5. Sekirrun,trandtt ht:ndult nrcnrrkarlun.jutt,oparr,ltulalkon dengan kentct.s,iav'apunyang It,lqh clihtut. Kemudiqn ltrlisjutt'ctpun.t'angburtr. 6. Rttjoh yttrtg ntengit'ingi soulun tidalt rlilulii.t mt'ngiktrl skolu sat'truli din.t'ttlrrkun. 7. tr4orkoh t.'crngclilteruntukkon btrgi ,sctitrlt soolttn ulutr ceraictn so,tlun ttiturtiukkan tlalant latntngun. 8. Mustt .t,uttgclicrttltrngkctntrnttrk ntanjctvt'ttbSoulun I iuloh 15 mirtit clan Soalun 2 iulah 45 ntinit. 9. ,1ndu cliheilurhan ntengeunukon kollorlutot'saintiJih yung litluk boleh diprrtgruntkan. 10. Serdhkan lterttts icnvctltan unclu tli akhir peperiktqan.

Pemht'riun Murkah: Murkqh -l --

I I

t

2 I 0

Ccmcrlong lt4emuaskan Lentoh

; Respon yong paling baik : Respon -vung sederhctnct : Responyctng kurong lepal

Lihat Sebelah SI]LIT

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(4 )

SULIT

o t1 ' a p p a r a t ufsi l r i r n e r p c t ' i t n e r tttct )c o l n p s r ct h e r c a c t i Y i t yo f [ . D i a g r a r nl . l s h o $ , st h c s e t - L r 1 a l k a l i r n c t a l st c l r v a t c itsh c i r r e a c t i o nw i t h o x y g c l l . radas ltugi .tuttrek,rlrcrintUttrtt I u k mert tlt o t tcli ttg, llcticrhl.l ntentrnjrrkkutt.ttt,suttcut ige rr. k er eakt i/ a n I rtgn m- | rt gttm o Ili o I i I er Iru t Irtp o k-s'

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D i a g r e nl r. l Ihjolr l.I

r lr r csl o t l i t t r rr c s l l c c t l \ ' ( l l ) ' t ( ' T h c c x p c r i m c n ti s c a r r i c do u t u s i n g a s r r a l l p i c c c o 1 ' l i t h i u r t rl,t o t i t s s i t t t a rcact witlr oxygcn gas. Obscrvationo s n t h e a l k a l i m e t a l si n t h e c x p e r i m c n t l r e s h o w n i n ' I ' a b l c I kepingun kecil litiunr, kolittm dort ttolritltr s('c(tr'Lt Eksperimt,n clijulunkun ntrrnggtrnctkcrn n. gcr'; tr o k'sig
Lihat Sehelah

SUl-lj

SPI\4(2009). KIMIAKERTAS3 PERCUBAAN

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(5)

sfJLIT

Whitc firrlcs Il'u.stt1t ltrtlilt

L i t l r it r n rb u r r r ss l o r r ' l yt t n c ll l r t t t L l tces r ' r ' l r i t cl u r t r e .

L-ith iuur L i ti r n r t

Whitc tirrncs pu/ih I'l'u,sct1t

P o t a s sLrt n r Kulitrnt

l

I Whitefirmes putih Il'oscrp III

__l Tablc I J*lual l

Lihat Sebelah SLiI-IT

(2009)' KIMIAKERTAS3 PERCUBMNSPI',4

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(6)

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4s1113

(a) Look at the f''larncproduced in cach experimentin Table l. Complete tlre Table I by stlting the observationfor eaclt reactionof alkali nrctalstorvardsoxygen. Perhatikan n.);qlqr,, ))ang terhasil clalam .setiap eksperinten dalam .Jcrdual | . Lengkapkun Jadual I dengan ntenyalokunpenterhalian ke ctlasnyalluunsctiup tincluk ltulus logttm a Ikali clengan o ksigen. 13 tnttrlrs) 13 nnrkah) (b) Basedon the experiment,completc the table belorv. Bcrda,sarkanekspo'intctt, lcngkapkanjudual di bdv,ah.

Manipulated variable: PernboIehubalt cli ntanipu Iosi kttn

M e t h o d t o m a n i p u l a t et h e v a r i a b l c : Ca ro tnatrtctrti1tu I u.si ka n p entb o I eh u h ttlr :

Rcsponclingvariablc: Pembo leh u balt bergeruk

H o r v t h c v a r i a b l ci s r c s p o n d i n g : Ilugaimuna pembolehubcthini bergeruk bolcr,s:

F i x e dv a r i a b l c : PemboI ehubuh climaI urkun :

Mcthod to nraintainthc llxcd variablc: Cqru menetnDkunLtemboIehubohdimuIorltun.

16 nturks) 16tnurliuhI

I Lihat Sebelah SULIT

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(7 )

STII,IT

45.1I /3

(c) Stalconc hypothcsis lbr tlrccxpcrimont. Nyulukrtnsutu ltipolt'.ti,s bagi ak.spcritrtett itrr

l ,J t t , a r k s l l-) nrurl;uhl

( d ) G i v c o n c i n l ' e r e n c cb a s c do n t h s r e s u l t so f t h s r c u c t i o nb e t w e e nl i t l r i u r na n d o x y g c n g r r s . Bt't"ilitrrrsahr itt-fercn.s bt:t'dusarkcltkepLrrlukepulttsan tittdoli bulds (utt(u'(rli/itrnt t/t'rrgtrtt gttsoksigan.

1.1nturli.s] l-1 ntut'ltuhl

( c ) B a s e do n t h c o b s e r v a l i o ni n T a b l e l , a r r a n g cl i t l r i r - r r np .o t a s s i u r na n c ls o t l i u r ni n t l e s c c n c l i r t , ' ordcr of rcaclivity torvardsoxygcl.r. Barclasorkunpemurhulian dulttnt Judtral 1,.su,strnhtrn liliunt, kulitrn drrn nrttritrrt utt:ngiikrtl lerl i b kcrcnkti./artI ogo nr lerhaclult oksigut saL:Ltrdil tcnunrtt.

l-1 m,trlisl 1 . 3r t r u r h u h l ( f ) T h c e x p c r i m c n ti s r e p c a t c du s i r r ga s n r a l lp i c c eo f ' r u b i d i u mt o f e a c tu , i t h o x y g c n . I { u b i d i u r r i s r r r o r cr c a c t i v ct h a n l i t h i u n r ,p o t a s s i u nat n d s o c l i u r t r . P r c d i c tt h c o b s c r u a t i o nf b r t h i s c x p c r i n r c n t . Ek.sparitncncliulangi nrcnsstrnakun sekclrtl ltccil rttbitlitttn unltrk clilinduli huluskun dan.qott oksigen. Rubiclium Iahih reuktiI berbartclingIi|itrm, kaliurn clctnnalritrut. Rttrttrt/konpenrcrltutiun bugi tinduk hulus ini.

l-1uurks'l 13tnurltuhl

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'1541/3

( 8)

SULIT

(s)D i u l - l . l r ml . 2 s l r r l l ' st h c r e a d i r r go l ' p l I r r t c l c rn ' l t e nt l t . :r t t e t a lo x i d c s t b r l l t c c li r t S e t l . I I l r r r d I I I d i s s o l v c di n g ' a l e r . Rt|uhl.2,tnt.,ttttnjttklir'ttt|.lut'.t'ttttttttc|ct.pI|0i)|]bi|(to|i'sit1ttltlgtttlt.\'('r|t.?|a]llt'tt|ttk I. ll drtn IlI tlilurtrtkcrnclultttntrit'. ---l*i-upo1'apprrntltrs i* s.t-l''-_:-_-1 Sot I

S u s u t t u r rt u d u s

L

\i;;;:=;;=-t7

L

i I

I I

p l l v a l r r-c- - - \

I

Ailui pll

\\r_

7// t 3 . t gi / / pll trrctcr' I'latcr p l I

l.ilium ltvtlloritle s t r l u ti o t t L d t r t I t t t tI i l i t r t t r It idrr tk.tidtt I

pi I vltlucIr/ilui p,ll pl I rnctcl lvlt:lcr pll hvtlro.rrtlc l)otlssi r-rrt.t L t t t ' tr l t t rt k t tI i t t n t Itit.lt'cli.sitltt

p l ' l v a l r " i ct'lilui 1.tlI ___ pll ntctcr. ll.lctct'pll unr h1,c1'-""ct. Sr.rcli solutiolr L t u ' t t I t t t t t tt t / t ' i t t n t

Itidrpk.;idu

DiagrarrI .2 llujult 1.2

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STII,IT

(e)

454rt3

( i ) R e c o r dt h e p H v a l u e t o o n e d e c i r n a l p l a c ef o r S e t I , S e t l l a n d S e t I I l . Catutkan niloi pI{ patlct sctttttempel perpuluhun bugi SetI, Set II dun Set III.

SetI SetII : S c tI I I : 13nturksl [3 murkuhf

(ii) Construct a tablcto rccordthc pFlvalucfbr Sct I, Sct ll andSct Ill. Bina satu iaduql untuk nterekodnilai pII bagi SetI, SetII dan Set III

l-| mtu'ksl l3 marlittll (iii) Statcthc opcrational dcflnitionfbr thealkali Itlj'crlqkancle.finisisecera operusi hagi alkuli

13murksl 13marhaltl

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4541t3

( i v ) T h e f o l l o w i n g i s a l i s t o f c h e n r i c a sl u b s t a n c ers' v i t hp l ' l v a l u e : Berikut iulqh senaruibeberapct bcthankintia clcngannilui pIl

Chernicalsubstance Buhun kimict A n r m o n i as o l u t i o n Lctnttutt qntmonicr

hydroxidesolution Potassium Lanrltut krl i um hidrok.vi dct hydnrxitlcsoltiiion So.liirrn Lortrlan nol riu m hi drok.siclcr C l a s s i f yt h e s cs u b s t a u c eisn t o s t r o n ga l k a l i a n d w e a l i a l k a l i . Kelaskan buhqn-Lrahunini kepatlu ulkuli kuut tlan ulkuli lenttth

13mtrrk.tl 13murliuhl

I Lihal Sebelalt SULIT

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stiLIT 2

4s4tt3

(li)

[)iagrarn2 show,stwo sL]ts.Set I and Sot II, 01-theapparatusset-ttpltncltl.rercstrltsfor an e x p c r i r r t e ntto s t u d y t h e e f f e c t so f m e t a l sX a n d Y o n t h e r u s t i n go f i r o n . bngi ,sattr Ralttlt2 mentrnfrrkkonduu.set, SetI dan SetII,.su:;uttunrados don kepttttr.san btsi. pcttgarulurt eksperimen trntttltnte'ngkujike'sunlogant X clun logamY ltc ctltts

Ilesultaller 3 days tr;;ty1 t9!,ep91\) !f!!i

set-up Apparatus Stt.gunanrodqs

Electroll4eZ Elcku'olirZ

Irrlnnlil did ttot rtrst Pokr besi ticluk berkurut

lrctnnaillPuhr hesr X McLalXlLogam

ElectrolyteZ ElaktrolirZ

Iron nail rttstecl Pokr besi berkunil

lron naillPuhrbesi Metal Y/Logant Y

Diagranr 2 Raiuh 2 l{efcrring to thc inlbmration above, plan a laboratoryexperimentto investigatethe efTectof nanrcdmetals X, Y anclnantcd clc-ctlolyteZ on t[-rerusting ol-iron. Mentjuk kcltadu rnakluntal cli olct,s,rancangkan satu eksperimen tlalun makmul unttrk mengltaji kesan logam-logum X .Y yang clinatnakandan elelrtrolit Z yang dinamuhctnlic itlus pengdr(ttan besi.

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su rT

4s4rt3

Y o u r p l a n n i n gs h o u l di n c l u d et h e f b l l o w i n g a s p e c t s : Pcruncangan anda hcndaklah mengandungi asgtck-aspekherikul: (a)

Problem statement Pernyalcurt masaalah

(b)

All the variablcs Semuapembolehubalt

(c)

Hvpothesis I Iipotesis

(d)

L i s t o l n r a t e r i a l sa n d a p p a r a t u s Scnqrui buhon clun rqclas

(e) Procedule Prosedur (f)

Tabulationof clata Pt ttj tttltt,tI un
ll7 nurrksl

END OF QUESTIONPAPER KERTAS SOALAN TAMAT

PERCUBAAN SPM (2009)- KllvllAKERTAS3

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4s4l

cptenrber I

JABATAN PE]LAJARANKELANTAN DENGAN KERJASAMA PERSIDANGANKEBANGSAANPENGETUA.PENGETUA SEKOLAH MENENGAH MALAYSIA CAWANGANKELANTAN

PEPERIKSAAN PERCUBAAI\ SIJIL PELAJARAN MALAYSIA 2OO9

KIMIA

UNTUK KEGTINAANPEMERIKSA SAHAJA

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{1

PEPERIKSAANPERCUBAAN SPM 2OO9 CHEMISTRY MARKING SHEME

ANSWBR OF PAPBR I No.

Ansrver

No.

Answer

I

B

26

A

2

B

27

B

D

28

C

C

29

C

C

30

A

6

D

3l

A

7

D

)z

C

8

C

aa JJ

A

9

A

J+

A

l0

A

35

B

il

B

36

B

t2

D

a-

)l

B

13

B

38

C

14

B

39

D

l5

('

40

A

t6

D

41

D

t7

A

42

D

18

D

43

C

l9

D

44

C

20

C

45

A

21

D

46

B

22

A

47

B

ZJ

A

48

B

.\A LA

D

49

A

25

ll

50

A

4

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(3)

454 l

MARKING SICHEMEoF PAPER2 NO QIJITSTION

MARK

Marking Criteria

SUB t)

(i)

Alkali 7 < pFI <12

(iv)

The concentration of hydroxideions in SolutionA is higher. The higherthe concentration of OH- ionsthe higherthe pH value. + f{Cl NaOH -) NaCi + HzO Correct reactant Correctproduct

(r) (b)

(i) (i i )

H2

l'he nuclei attractiontou,ardsthe valenceelectroni is weakerin G. Thus it is easierfor G to lose/ releasean electronto form a positivelyghargedion.

(ii)

I-{asstable/octetelectrorrarrangementllhave 8 electronvalence Show colouredion//formedcomplex ion//hasui.iour o^ioatio" number//actas catalyst

I l+l 1 I l

I I

10

I

I

Draw the connectingwire and voltmeter

(c)

r0

I

(a)

(b)

l+l

I

rii)

3

+ 2D 2HzO )2DOH + Correctreactant& correctproduct B a l a n ce e q u a ti o n G

I I

I

Group 16.Period3

(d)

(e)

I

M a V a: 1 ( m o l e r a t i1o: 1 ) MbVb : I Va: 0.3x50 0.1 150cm3

(c)

(c)

I

( ii i )

(b)

2

I

oH'

ll

TOTAL

t0

Labeling.zincplate) ( - ) and coppetplate ) I + ; From zinc plate to copperplate throughthe externalcircuit

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s P M( 2 0 0 9-)K t M t A

iebelah I Lihat Sebela SULIT SULI'

U"UT (d)

(r) tol \ tr,/ l I

454 l

To allow the flow of ion from both electrolytethroughrt to completethe circuit Thg zinc platebgcomesthinner

(e)

(i) ( ii )

Cu'-+2e)Cu

I

The voltagcwill be higher The silvermetal is underthe coppermetalin the etectroctremicat series.

I

(h)

I

papercollection

(4)

I

0.1

I

BE

A

0.8 For pair of metalA / B , the voltageproduced :0.8-0.1:0.7V I

4

(a)

(i)

(b)

(i)

'l'he

chemicalformula that showsthe simplestratio of atomsof the elementspresentin ? compound.

Element Unsur Mass(g) Numberof moles Simplestratio of moles Empirical formula

ii) (c)

f

2Yg *

O,

o

Mg

2 5 . t 2- 2 4 . 8 8 2 5 . 2 -82 5 . t 2 //0.24 /t0.t2 0.2.4/24 /t0.01 0 . 1 6 / 1/6t 0 . 0 1

1+l I

1 N gO

-'* 2\rlgo

To ensurethat all the magnesiumreactscompletelywith qxygen. Copperis an unreactiveelementtowardsoxygen Acidifi ed Potassium-rnanganate(VID

(d) (a)

(b) (c) (d)

(0

t0

I I I

I

reduction

(i) (ii) (iii)

(e)

l+l

Colourless solutionturnbrown

2I' --) Iz + 2e Iodideion releaseelectron To allow the flow of ion from both electrolytes Functionaldiagramof sirnplecell Label

I I

9 I I I I

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4541

The heatgiven off when I mol of butanolbum completelyrn

excess oxvsenis 2679l:1. ( l ) N u m b e ro f m o l e: 0 . 3 7 mol //0.005mol 74 2) Heatreleased : 0.005 x2679113.395W/13.395x 10rJ

Substitution/Rep Iacement 1 3 . 3 9x5 1 0 3 : 5 0 0x 4 . 2 x 0 /0:13.395x103 500x 4.2 0:6.379/6.40C Draw and label of the energyaxis in the form of arrow with two level of energy Formula/lr{amethe reactantsand productsfor exothermic reaction Energy C4HeOH

LH: -2679kJmol-r 4COz + 5HzO Any valuebetween:-2016kJ mol-' < AH < - 2036kJ molAs the number of carbon atoms increases.there are more

carbondioxide and watcr moleculesare produce Thus more bondsare formed

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4541

Markine Criteria 12 represents the nucleonnumber. 6 represents the proton number.

Able to draw the structureof an atom elementsX. Thc diagramshouldbe able to show the following informations: l. correct number and positionof proton in the nucleus/at the ccntre of the atom. 2. correct number and position of neutron in the nucleus/at the centre of the atom. 3. correct number and position of electroncirculating the nucleus 4. correct number of valenceelectrons Sampleanswer:

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(7)

454 l

or llp + 12n

(c)

(i)

Atoms W and Y form covalentbond. To achievethe stableelectronarrangement, atom w contributes4 electronswhile atom Y contributesone electron for sharing. 'fhus, atom W shares4 pairsof electronswith 4 atomsof y. forminga moleculewith the formulaWy all diasram

iail .V4 (ii)

Atom X and atom Y form ionic bond. Atom X hasthe electronarrerngementZ.B.l. and atom y hasthe electronarrangement 2.8.7^

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454 l

l'o achievea stable(octet )electronarrangement, atom X donates1 electron to form a positiveion // equation >;q++ X e

I

Atom Y receivesan electronto form ion y-l/equationand achievea stableoctet elcctronarrangement. y,_____r Y+e

I I

Ion X* and ion Y- are pulled togetherby the strongelectrostaticforces to fbrm a compoundwith the formula Xy// diasram

I

Max

l0

(d)

The melting point of the ionic compound/(b)(ii) is higherthan rhat or tnJcovalcnt compound./(bxi) . This is becausein ionic compouncls ionsareheld by strongelectrostatic forces. Fligh energy is neededto overcometheseforces. In covalentcompounds,molecules;are held by weak intermolecularforces. Only a little energyis requiredto ()vercomethe aftractiveforces. OR

or

The ionic compound/(b)(ii)conductselechicity in the molten or aqueoussrate whereasthe covalentcompound/(b)(i)doesnot conductelectricity. This is becausein the moltenor aclueous state,ionic compoundsconsistof freelymoving ions carry electricalcharges. Covalentcompoundsare madeup of moleculesonly

I

RCUBAANSPM (2009)- KtMtA

max -A

I

I

I

I I Total

20

elah I Lihat Sebela SULI LIT

papercollection

4541 (i) l. Thebrowncolourof brominewat.ffi 2. Ethenehasundergonean additionreaction. (ii) L The productis 1,2-dibromoethane 2' Br Br H-C

tl

tl

-

C-H

HH (i)

1.oZmassof hydrogen:m 2 . M o l e s r a t i o o f C: H :92.75112: 17,25/l 3. :2:5 4. The empiricalformulaof Z is CzHs

(ii)

l. Let the molecularformulabe (C2H5)" Therefore,(12x2 + 1x5)n : 58 n:2 2. Hence,Z is CaHl6

(i) Elasticity

(ii) Strcngthand hardness

(iii) Resistance towards oxidation

Unvulcanisedrubber Lesselastic. Reason:t.herubber moleculescanslide over eachothereasily when it is;stretched. Soft and lessstrong. Reason:the rubber moleculescanslide over eachother easily when it is stretched. Easilyoxidisedby oxygen. Reason:the numberof carbon-carbondouble bonds,C-C per moleculeis high.

Vulcanised rubber More elastic. Reason:the presenceof sulphurcross-linkscanpull back the rubbermolecules to their originalpositions after it is stretched. Strongerand harder Reason:the presenceof sulphur cross-linksmake sliding of rubbermolecules more difficult. More resistanceto oxidation. Reason:the numberof carbon-carbondouble bonds,C:C per molecule is low.

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454r

SectionC 9 (a)

Food additivcs Irlavouring Colouring Presenative Antioxidant

llow food aclditivesreacts makesfood tastier coloursfood so that it looks more Attractive Preventthe growth of microorganism on food slow down the oxidationof food

1+l l+l

l-rl

l+1

* any threefrom above

(b) (i)

^ )ampleanswer; Apparatus: - I kg weight - ruler - retort standand clamp - thread - steelball Matcrials: - copperblock - bronzeblock

1

Able to state the steps.1. a steelball is stuckonto the copperblock 2. a weight of ('/, -2 ) kg is hungat a heightof (0.5-1)mfrom the top of Copperblock. 3. the weight / threadis released/ dropped 4. the diameterof dentis recordecl 5- step I to 4 are repeatedseveraltimes to obtain an averaseof the diameter 6. the experimentis repeatedusinga bronzeblock.

I II

I I

Able to conslruct the table:

llixperiment

Ir

1

lr@

f-;::-----:r-l--

l D l a m e t e r odf e n t o n t h e h r o n z e h l o c k / m m lBl l82 lBr l4

-l

I

Able to statethe conclusion.. Il is smallerthanA. Brassis harderthan copper/ alloys are harderthan pure metals

RCUBAANSPM (2009). KIMIA

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( li )

4541

Copper

Copper -Con'ectdrar.vthe arrangementof atom in copper -Correct drar.vthe arrangementof atom in bronze -correctlabeledof atom The stanumatom distrupt the orderly arrangementof atomsin copper This prevcntsthe layersof pure metal (copper)atomsfrom sliding on one another easily.

l0

(a) | 1 \ D t c t o s t a t e

| (i) Sulphuricacid Mg + HzSO+ -->

MgSOa +

I I

H2

(ii) Able to draw an energyprofilediagramthat showsthe following five information: 1. labelof energyon verticalaxis 2.The positionof the energylevel of the reactantis higherthanthe energylevel ofthe product 3. Correctpositionol Ea 4. Correctpositionoj E'a 5. Correctpositionol'AH If cnergy level diagramgiven, not energyprofile diagram,award pt1 and pt2

I I

I

I

I

onlvl

Able to giu. l. Reactionis exothermic 2. The reactantscontainmoareenergythan the products 3. Heat given nout during bond formationis greaterthan heat absorbedduring bond breaking 4- AH is the energydifferencebetweenthe reactantsand products 5. Activation energy,Ea must be overcomein order for the reaction to takeplace 6. The useof catalystreducesthe activationenergy 5

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4541

(must correspond to the energyprofile diagram, ,egott* catalysl increasesthe activation energy) 7. the useof catalystincreases the frequencyof effectivecollision betweenH' ion and magnesiumatom (lr{eagative catalystreducesthe frequencyof effectivecollision betweenI{* and magnesiumaLtom) anyfive points'. Note: If endothgrmicreaction; pts 1,2,3 lost (i) Able to calculatethe averagerateof reaition 1. volumedividedby tirne 2. Conect answerwith the unit Avaragerateof'rfeactiuon: 400 cm3 200 s : 2 c m 3s - l

(ii) Able to explainthedifferencein theruffi followins Information l. The rateo1'reaction for ExperimentII is higher/greater than ExperimentI r: slowerfaster 2. This is becausesulphuricacid in ExperimentII is diprotic/dibasic acid 3. Hydrochloricacid in ExperimentI is monoprotic/monobasic acid (Basicity of acid in ExperimentII is higher than acid in Experiment I givespts 2 and 3) 4. Diprotic acid hashigher concentrationof H* ion //monoprotic acid has lower concentrationof H* ion a: more/higher number/lessI{ 5. The frequencyof collision betweenH* ion and magnesium in ExperimentII is higher than in ExperimentU/The frequencyof collisionbetweenH* ion andmagnesiumin ExperimentI is lower than in ExperimentII r: betweenparticles 6. The frequencyof effectivecollision in ExperimentII is higher/greatertharrin Experimentlil The frequencyof effective collisionin Experriment i is lower/smallerthan in ExperimentII

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4541

MARKING SCHEMB OF PAPER 3 Question I (a)

E:rplanation

Maximum score

Ilble to state all the observationscorrectlyJ Scrmpleens\1.)er :

Set

Observation

II

Potassium burnsvigorouslyandproduces whitefume

III

whitefume Eg4ilq burnsrapidlyandproduces

[Able lo state any one observotictns correctlvl

L

[Able to state any one observatictnsincompletelvl e answer:

Potassiumburns vigorously /i produceswhite fume. Sodiumburnsrapidl // produceswhite fume. fNo responsegiven or wrong responsel Qucstion

I (b)

E:rplanation

0 Maximum score

[Able to state three variqbles and the way to control them correctryl

e answer: Manip ulat'edvariable:

Use different tlpe of alkali metals

Type of alkali metals Respondingvariable: Reactivityof alkali metals

Observetheburning/reactivity of alkalimetalswhenreactwith oxygengas.

Fixed variable:

Use oxygen gas in each Oxygen gasll sizeof alkali metals experimentllUse the samesizeof metals. fAble to state any 5 of the above information correctlyl fAble to state any 4 of the above information corricttv I ffble to state any 3 of tbe above information correc'tlyl [4Qle to state any 2 of the above informationc?rrectlyJ lAble to state any I oJ the above informationcorrectlVI [No responsegiven or wrong responseJ

5 4

3 2 I

0

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(14) Question

(c)

Explanation

4541 Maximum score

resportdingvariable vyithdirectjon correctlv/ Sampleanswer: The lower the positionof an alkali metalin the periodicTable,the more reactiveit is when reactswith oxygen.

fuble to state the relationshipbetweenthe manipulateclvoriableand the responding variableJ Santpleanswer: The lower position of an alkali rnetalin the periodic Table. the more reactiveis the metal. lAhle lo state an idea of hypothcsisJ Sample answer: Alkali metalhavedifferentreactivity.

I tvo response grven or wrong responseJ

Qucstion

Explanation

0 Maximum score

I (d)

Santple answer'. l. Lithium is the leastreactivemetal towardsoxygen. 2. Lithium oxide is formed. [Able lo state the inference but not completelyJ Any one inference

2 lAble to state an idea of inferenceJ Sample answer'. Reactionoccurs

l

Ilvo response gtven or wrong responseJ

0

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(e)

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4541

l0xplanation fAble to arrange the position o"fall melals in clescendingorder reactivity correctly/

Maximum score

of

Sanp/e answer: Potassium/K,Sodium,Na,Lithium/Li rAUter0 arrange thepostlrcn oJat reastfiuo metalsin descendingorder of reactit,ia correctlyJ Sontpleanswer: Potassi um/K, Sodium/Na // Soclium/Na, Lithium/Li LAblL,to give an idea to urrang( the metalsf Sampleanswer: Lithium/Li, Sodium/Na,potassium/K I tvo responsegwcn or wrong responseJ Qucslion

Explanation

1(0

0 Maximum score

oxygen correctly J Sampleanswer: I{ubidiurn burns more vigorously and produceswhite fume.

[Able to predict the observationfor the reaction betweenrubidium ancl oxygen J Sample answer: Rr-rbidium burnsmore vigorousl'y.

[Ableto statean icleatopredi",,rn oiruffi rubidium and oxygen correctly J Sample answer: Tlrereactionis morereactive. p,troresponsegiven or wrong ,"tpont"j

0

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(16) Explanation

Question

L(eXi)

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N{aximum score

IAble to record all thepII meter reading with one decimalplace ucctrnttelyf. Sctmpleanswer: SetI : 13.2 S e tI I ; 1 3 . 6 S e tI I L ' 1 3 . 3 [Able to record any two readings accuratelyJ Or [Able to record all the pH meter reading without one decimal place correctlyl IA.ble to record any one readings corectly] INo rasponsegiven or wrong re.rponsel Explanation

Question I (g)(ii)

2

0 Maximum score

Able to construct a table to record thepH valuefor set I, set Ii and SetIII of experintentthat contain: l Correcttitles 2. pH values Sampleanswer: Set

pH Value

I

13.2

II

13.6

III

13.3

Able to construct tt tctblethat contains thefollowing: I.

2

Titles

2. reading // ecf Able to construct a table with at least one title/reading. INo re,sponsegiven or wrong responseJ

0

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(17 ) Explanation

Qucstiorr I(g)(iii)

4541

Maximum score

[Able to state the operationaldefnitionfor alkali correctly| Sarnplc answer: plJ value that is more than7 when pH meteris dippedinto a sorution.

[Able to ,statethe operationaldqftnitionfor alkali J Sarnpleanswer: pll value that is more than7.

[Able to state an iclea of operational definitionfor alkati ] Sample answer: pI{ valuethat is 13. lNo responsegiven or wrong responsel Erplanation

Qucstion l(g)(iv)

0 Maximum score

[Able to classifi all the substancescorrectlyJ Sampleanswer: Stronealkali Weak alkali Sodiumhydroxidesolution Ammoniasolution Potassiumhydroxide;solution

[Able to classify any two substancescorrectlyl

a

correctlyl fAble to classifianyonesubstance [No responsegiven or wrong response]

0

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( i8 ) KI(0512U Score

2(n)

o stateproblemstatement Explanation/Rubric

,4ntcto grvc ilre sratementoJproblem by relating thefollowing 4 i rtforntati on cor r ectIy.. 1. dffirent metals 2. contact -1. electrolyte 4. ru.sting Responseis in questionform:

4541

Maximum score

Sampleanswer: How do/(Do) different type of metals/ (metalsX and y) in contactwith iron in the presenceof an electrolyteaffect rusting of iron ? // what is the effect on the rusting of iron, when it is in contactwith other metals (metalsX andY) in the presenceof an electrolvte? Able lo give the statementof prottlem" Responseis in .questionform: Sampleanswgf: I-low do different type of metals/ (metarsX and y) affect rusting? Able to give an idea of statementof theproblem.

S-llodq-atrsr{er: To investigatethe effect of differont type of metalson rustins//Does electrolyte/X/YImetal affect iron rustins? 1\Orcsponseor wrong response. _ KI(O5 202-Tostateall variables Score Explanation/Rubric

2(b)

,4orero statcall vartoblescorreclly:

0

Maximum score

Sampleanswer: Afanipulatedvariable: metal X and metal y // stating2 metalswhich one metalis lesselectropositive and onemetalis more electropositive than iron.l/pairsof X-Fe and Y-Fe Respondingvariable: the rustingof iron l/ iron rustsor doesnot rust /l e.g.the formationof blue spot//the formation fany suitableobservations: of pink colour // the formationof brown solidl

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F'ixedvariable: iron nail// electrolytei(named) ll agarljellysolution //ternperature

Able lo state any two variables correctly.

Able to state any "r"

*r*U,

2

*;

No resDonseor wr

0

KK051202-Tostatea hwothesis Score

2(c)

Explarration/Rubric Al:le to ,statethe relationship betvveen the maniputatediariabk th" ""d responding variable with direction correctly:

Maximum score

Sampleanswer: Metal Y causesiron nail rustingwhile metalX doesnot.//A more electropositive metal/(metalX) will preventiron from rustingwhile a lesselectropositive metal (metal'f) will be rustingiron. Able to state the relationshipbetweenthe maniputot"drorntt" ord th" respondingvariable: S41rly'eansl.ver: Metal Y speedsup iron nail rustingwhile metalX slowsdown rustinq. Able lo state an idea of hypothesis:

Sampleanswer: MetalX /Y affecttherustingof iron. No responseor wrong response. KI(05 203-listof materialsand apparafus; Score Explanation/Rubric 2(d)

0

Maximum score

Able to give a bomplete list of materials and apparatus thai tn:,otvesthe following: a J

l.

iron nails

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2. I metal aboveiron in elec,trochemical series -1. I metal below iron in electrochemicalseries 4. A suitable electrolyte,test-tubes,sandpaper Sampleanswer: Iron nails,magnesium/zinclaluminium strip,tinicopper/lead/silver strip, Iagar-agarsolutiont- potassiumhexacyanofenate(III) solution+phenolphthalein indicat.lrlllany suitableelectrolyte]/[water], test-tubcs/boiling-tubes, sandpaper Able to give a list of materialsanc apparatusthot in otuet the fotto*tr,6-. 1. I metal above iron in electrochemicalseries 2. I metal below iron in electrochemicalseries 3. Any suitable electrolyte,any suitablecontainer Able to give a list of materials and apparatus thot tn oli"s th"fottowtng 1. I metal above/belovv iron in electrochemicalseries//anv suitable electrolyte" 2. anv container No response or

Kt(05 203-procedure of the experiment Score 2(e)

Explanation/Rubric Able to state thefollowing 6 steps: l. [Clean the iron nails and metalsstrip with sandpaperJ 2. [Coil iron nails with the ntetalsJ -1. [Place iron nails in separatecontainerJ 4. [Pour/add/fill the [named electrolyteJinto the containerf 5. [Leave them asidefor several daysJ 6. [Record your observationll S+mpleanswer: 1. clean iron nails,magnesiumribbonand copperstrip with sand paper. 2. coil two iron nailstightly with magnesiumribbon and copper strip. 3. Placeall the iron nailsin separate testtubes. 4- Pour the hot agarcontainingpotassiumhexacyanofenate(Ill) solutionand phenolphthalein indicatorinto the testtubes. 5. Keepthe testtubesin a testtuberack and reavethem asidefor 3 days. 6. Recordyour observations.

Maximum score

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Steps2,4,6

2.

Step2[coil iron nail with Mg/Cu],4 I No response or wrong response.

0

K K O 5202-Tomaketabulationof data Score

2(0

Explanation/Rubric Able to exhibit the tabulation of data that includest'n lotto*tngfou, informcttion. l. IIeadingfor the manipulated t'ariables 2. Examplesof Sets//pair of meta'ls 3. Headingfor responding variable 4.2x3 or 3x2 table

Maximum score

Set//pair of metals I, II//Mg-Fe, Cu-Fe observation

Sampleanswer: Set//Pairof metals V/Me-Fe IVlCu-Fe

Observation

Able to exhibit the tabulation of rlata that includesthefoltowing two information. l. l/3 from score 2 2. 2x2 table Sampleanswer: SeV/Pairof'metals

Observation

No responseor wrong response.

END OF'MARKING SCEME

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