Spm Percubaan 2008 Kedah Chemistry Paper 1

SULIT 4541/1

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Chemistry 1

Sept. 2008

PERSIDANGAN KEBANGSAAN PENGETUA-PENGETUA

SEKOLAH MENENGAH

NEGERI KEDAR DARUL AMAN

PEPERIKSAAN PERCUBAAN SPM 2008 CHEMISTRY

Paper 1

One hour and fifteen minutes JANGAN BUKA KERTAS SOALAN INI SEHINGGA DlBERlTAHU

1.

Kertas soalan ini adalah da/am dwibahasa.

2.

Soa/an dalam Bahasa Inggeris mendahului soa/an yang sepadan dalam Bahasa Melayu.

3.

Calon dikehendaki membaca malclumat di ha/aman be/akang kertas soalan ini.

Kertas soalan ini mengandungi 27 halaman bercetak

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SULIT 3 1 . Which of the followi~ substances consist of atoms? Amara bahan berikvJl:yang manakah terdiri daripada atom? A Magnesium Magnesium B Nitrogen gas Gas nitrogen C Lead(II) iodide Plumbum(ll) iodida D Naphthalene Nafialena 2

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Table I shows the melting and boiling points of substances P, Q, R and S. Jadual J menunjukkan takat lebur dan takat didih bahan P, Q, R dan S .

Substance Bahan P

Q R S

Melting point I °C Takatlebur -25 50 -256 10 TABLE 1 JADUAL J

Boiling point I °C Takatdidlh 5 300 -192 140

Which of the following substances is a liquid at room temperature? Antara berikut manakah merupakancecairpada suhu bilik ?

A B

3

P

Q

C

R

D

S

The following statement is about an atom.

Pernyataan berikut adalah mengenai atom. The mass of an atom is concentrated in the nucleus which contains positively charged particles. Jlslm bagi suatu atom tertump« dolam nukleus yang mengandungi zarah bercas positll

Which of the following scientists made the statement?

Amara saintis berikut manakahyang membuat kenyataan tersebut? A B C D

J.J. Thomson

Neils Bohr

Ernest Rutherford

James Chadwick

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MOZ@C SULIT 4 4541/1 4 Table 2 shows the elements in Period 3 of the Periodic Table of elements. The elements can react with oxygen to form oxides. Jadual 2 menunjukkan unsur-unsur Kala J dalam Jadual Berkala Unsur. Unsur­ unsur terse but bertindak balas dengan oksigen membentuk oksida.

1

E~~~t 1__N_a_-'--_Mg_----'-_A_1_I

Si

TABLE 2

JADUAL2

P

CI

S

Which ofthe following element form oxide that can react with both hydrochloric acid and sodium hydroxide solution? Antara berikut unsur manakah membentuk oksida yang boleh bertindak balas dengan asid hidroklorik dan juga larutan natrium hidroksida?

A

S

B C D

P

Si

AI

5

Butane and water have low melting and boiling points. Butane and water are Butana dan air mempunyai takat lebur dan takat didih yang rendah. Butana dan air adalah A covalent compound sebatian kovalen B organic compound sebatian organik C ionic compound sebatian ion D hydrocarbon compound sebatian hidrokarbon

6

Which of the following substances can conduct electricity in molten or aqueous solution? Amara bahan berikut, yang manakah boleh mengkonduksi elektrik dalam keadaan leburan dan larutan akueus? A Lead(ll) bromide Plumbum/H) bromida B Potassium chloride Kalium kJorida C Tetrachloromethane TetrakJorometana D Naphthalene Naftalena

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7 Diagram I shows the set-up ofthe apparatus for electrolysis.

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Rajah J menunjukkan susunan radas yang digunakan dalam elektrolisis.

Carbon Karbon

Carbon Karbon ,. *""

........

,.. "

""'.....

' ;';-.~.- ­

Electrolyte Elektro/it

DIAGRAM I RAJAH J Which ofthe following compound can beused as an electrolyte? Antara sebatian berikut yang manakah boleh digunakan sebagai elektrolit? A Ammonia solution Larutan ammonia B Glucose solution Larutan glukosa C Naphthalene Naftalena D Ethanol Etanol 8

Diagram 2 shows the set-up of apparatus of an electrolytic cell. Rajah] menunjukkan susunan radas bagi sel elektrolisis.

Copper electrodes Elektrod kuprum

Copper(II) sulphate solution Larutan kuprum(Il) sulfat DIAGRAM 2 RAJAH] Which ofthe following graphs show the changes in mass of the cathode during electrolysis? Amara grqf berikut manakah menunjukkan perubahanjisim katod semasa elektrolisis?

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Time Is Masa/s

c Mass/g Jisim/g

Time I s Masa/s

D

Mass/g

Jisim/g

Time I s Masa/s

9

Which of the following is true about a weak alkali? Amara berikut, yang manakah benar tentang alkali lemah? A

Unable to neutralise an acid. Ttdak boleh meneutralkan asid.

B

The pH value is less than 7. Ni/ai pH lebih kecil daripada 7

C D

Able to change blue litmus paper to red. Boleh menukarkan wama kertas litmus biru kepada merah. Ionises partially in water to produce hydroxide ions. Mengion separa dalam air untuk menghasilkan ion-ion hidroksida.

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Diagram 3 shows the set-up of apparatus for the titration of sodium hydroxide solution with a diprotic acid. H 2X. The letter X is not the actual symbol of the element. Rajah 3 menunjukkan susunan radas bag; proses pentitratan larutan natrium hidroksida dengan asid diprotik; HV{. Huruf. X bukan simbol sebenar unsur itu.

Sodium hydroxide solution and phenolphthalein .~~- Larutan natrium hidroksida dan penunjukfenolftalein

C:::=====::J

DIAGRAM 3 RAJAH 3 25.0 em] of H2X acid neutralises 20.0 cml of sodium hydroxide solution.

NaOH 1.0 mol dm-3 •

What is the molarity ofthe acid. HV{?

25.0 em 3 asid HV{ meneutralkan 20.0 em 3 larutan natrium hidroksida, NaOH. 1.0 mol dm",

Berapakah kemolaran asid H~

A B C D

O. 2 mol dm?

O. 4 mol dm"

0.6 mol drn"

O. 8 mol dm"

11 Which of the following salts is soluble in water? Amara garam berikut, yang manakah larut dalam air? A Magnesi urn carbonate Magnesium karbonat B Silver chloride Argentum klorida C Copper(ll) nitrate Kuprum(Il) nitrat D Barium sulphate Barium sulfat

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Diagram 4 shows the structural formula of a polymer. Rajah 4 dibawah menunjukkanjormu/a struktur suatu polimer. H

H

H

H

H.

H

······i-{-~-~ -{- { H

CH 3 H

CH3 H

.

CH3

DIAGRAM 4

RAJAH 4

What is the structural formula of its monomer?

Apakahformula struktur monomemya?

A

B

c

D

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MOZ@C SULIT 9 13 Which of the following are the properties of glass? Antara berikut, yang manakah sifat-sifat kaca? I

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Transparent

Lutsinar II

Does not react with chemical

Tidak bertindak balas dengan bahan kimia III Can be cleaned easily

Senang dicuci IV

Can insulate heat

Boleh menebat haba A

I and III only

I dan III sahaja B C

o

I, III and IV only

I, III dan IV sahaja II, III and IV only II, III dan IV sahaja I, II. 1IIand IV I, II, III dan IV

14 The rate of chemical reaction cannot be determined by measuring

Kadar tindak balas tidak boleh ditentukandengan mengukur A the volume of gas liberated per unit time.

isipadu gas dibebaskanper unit masa. B the formation ofprecipitate per unit time.

pembentukan mendakan per unit masa. . C the change ofcolour per unit time. perubahan wama per unit masa. D the change of the size of solid per unit time.

perubahan saiz pepejal per unit masa 15

The similarity between ethane and ethene is

Kesamaan di antara etana dan etena ialah A have two carbon atoms in the molecule

mempunyaidua atom karbon dalam satu molekul B are saturated hydrocarbons

merupakan hidrokarbon tepu C are in the same homologous series

o

berada dalam siri homologyang sama are soluble in water

boleh melarut dalam air

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Which of the following is Dot a reaction shown by ethanol? Amara berikut, mana satu bukan tindak balas yang ditunjukkan oleh etanol?

A

Undergoes dehydration to produce ethene. Mengalami pendehidratan untuk menghasilkan etena.

B

Undergoes fermentation with yeast. Mengalami penapaian dengan yis.

C

Oxidation by acidified potassium dichromate(VI) solution. Pengoksidaan dengan larutan kalium dikromattVl) berasid.

D

Esterification with carboxylic acid in the presence of concentrated sulphuric acid Pengesteran dengan asid karboksilik dengan kehadiran asid sulfurik pekat.

17 Aspirin is a type of analgesic, but it also causes gastric pain. Why? Aspirin adalah sejenis analgesik; tetapi boleh menyebabkan gastrik. Mengapa?

I

Aspirin contains acid.

II

Aspirin can react with gastric secretion to form acid.

Aspirin mengandungi asid Aspirin boleh bertindak balas dengan lelehan gastrik menghasilkan asid.

III Aspirin can react with food substances to produce poison. Aspirin boleh bertindak balas dengan makanan menghasilkan racun.

IV Aspirin contains poisonous substances. Aspirin mengandungi bahan beracun.

A

I and II only I dan II sahaja

B

II and III only II dan III sahaja

C

I. II and IV only I, II dan IV sahaja

D

1, III and IV only I, III dan IV sahaja

18

Which of the following food additives is an antioxidant? Amara bahan tambah makanan berikut yang manakah adalah pengantioksida?

A

Benzoic acid Asid benzoik

B

Ascorbic acid Asid askorbik

C

Sodium nitrate Natrium nitrat

D

Ethyl ethanoate Etil etanoat

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19 Diagram S shows the energy level diagram for the precipitation reaction of calcium carbonate. Rajah 5 menurfukkan gambar rajah aras tenaga bag; tindak balas pemendakan kalsium karbonat. Energy Tenaga

CaCO s

DIAGRAMS RAJAH 5 Which ofthe following can be derived from the energy level diagram? Antara berikut manakah boleh disimpulkan daripada gambarajah aras tenaga itu? I

n III

IV

A B C D

The reaction is exothermic Tindak balas adalah eksotermik The reaction is endothermic Tindak balas adalah endotermik The total energy content ofthe reactants is lower than that ofthe products. Jumlah kandungan tenaga bahan tindak balas adalah lebih rendah daripada hasil tindak balas. Temperature decreases in this reaction. Suhu menurun di dalam tindak balas ini.

I and III only 1 dan III sahaja II and III only 11dan 1/1 sahaja II. III and IV only II. III dan IV sahaja I and IV only 1 dan IV sahaja

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20 Diagram 6 shows a structure of a molecule.

Rajah 6 menunjukkan struktur bagi suatu molekul.

\/\/\/\/.COONa

~

BahagianX

I;:;

Bahagian Y

DIAGRAM 6

RAJAH 6

Which ofthe following statements about the molecule is true? Amara pernyataan berikut manakah yang benar tentang molekul itu? I

Part X dissolves in water. Bahagian X melarut dalam air. II This molecule functions effectively in hard water. Molekul ini berfungsi secara berkesan dalam air fiat. III This molecule is obtained from the hydrolysis of fat molecule with sodium hydroxide solution. Molekul ini dihasilkan secara penguraian molekul lema! bersama larutan natrium hidroksida IV Part X can remove dirt by dissolving parts of its molecule in the dirt during cleansing activity. Bahagian X boleh menanggalkan kekotoran dengan melarut dalam kotoran semasa akttviti pencucian. A

B C

D

I and II only I dan II sahaja I and III only I dan III sahaja 11 and IV only II dan IV sahaja III and IV only III dan W sahaja

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SULIT 13 21 Diagram 7 shows the symbol for atom X. Rajah 7 menunjukkan simbol bag; atom X

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DIAGRAM 7 RAJAH 7 Which ofthe following represents the electron arrangement of ion X- ? Antara berikut manakah merupakan susunan elektron bagi ion X- ? A 2.7 B 2.8 C 2.8.8 D 2.8.8.1 22

Table 3 shows the proton number, nucleon number and number of electrons for atoms P, Q, Rand S. Jadual 3 menunjukkan nombor proton. nombor nukleon dan bilangan elektron bag; atom p. Q. R dan S. Nucleon Number .Number of electrons Nombor nukleon Bilanzanelektron 23 lJ 23 10 16 8 17 8 TABLE 3 JADUAL3 Which of the following are true about atoms P, Q, Rand S? Amara berikut manakah benar tentang atom P, Q. R dan S? I Q is a positive ion Q ialah ion positif n R and S are isotopes R dan S adalah isotop DI P reacts with R to form a covalent compound P bertindak balas dengan R untuk membemuk sebatian kovalen IV P and Q are atoms ofthe same element P dan Q adalah atom bag; unsur yang sama Particle Zarah P Q R S

A B C D

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Proton Number Nombor proton 11 11 8 8

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SULIT 14 23 The information below describes the properties of element X. Maklumat di bawah menghuraikan sifat unsur X

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Conducts electricity Mengkonduksikan elektrik

Soft and shiny Lembut dan berkilat Reacts vigorously with water Bertindak balas cergas dengan air

Which of the following elements best fits the above properties? Antara unsur berikut manakah paling mungkin mempunyai sifa! di a/as? A

8 C

D

Aluminium Aluminium Copper Kuprum Potassium Kalium Calcium Kalsium

24 Which of the following isotopes is used to detect the leakage in a gas pipe? Amara isotop berikut manakah digunakan untuk mengesan kebocoran dalam paip gas? A Carbon-14 Karbon-J4 8 lodine-131 Iodin-HI C Cobalt-60 Kobalt-60 D Sodium-24 Natrium-24

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25 The electron arrangement of atom X is 2.8.5 and atom Y has 2 valence electrons. What is the type of bond and formula of compound formed between X and Y? Susunan elektron bag;atom X ia/ah 2.8.5 dan atom Y mempunyai 2 elektronvolens. Apakahjenis ikatan danformula sebatianyang terbemuk antara X dan Y?

A

Type of bond Jenis lkatan

Formula of compound Formula sebatian

Ionic

XY2

Ion B

c

Ionic

Y)X2

Ion Covalent

X2Y)

Kava/en D

Covalent

YX2

Kava/en

26 Diagram 8 shows the electron arrangement of a carbon dioxide molecule.

Rajah 8 menunjukkan susunan e/ektron bag; molekul karbondioksida.

DIAGRAM 8

RAJAH8

Which ofthe following is true?

Amara berikiayang manakah benar? A

One carbon atom requires two electrons to achieve the octet electron arrangement.

Satu atom karbon memerlukan dua elektron untukmencapai susunan elektron abet. B

Each oxygen atom contributes one electron for sharing.

Setiap atom oksigen menyumbangsatu elektron untuk dilwngsi. C D

Four double covalent bonds are formed in a carbon dioxide molecule. Empat ikatan kovalengandadua terbentuk dalam molekul karbondioksida. One carbon atom contributes four electrons to be shared by two oxygen atoms

Satu atom karbon menyumbangempat elektron untuk dilwngsi dengandua atom oksigen.

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SULIT 16 4541/1 27 Which of the following statements is false concerning a simple chemical cell shown in diagram 91 . Antara pernyataan berikut manakah tidak benar bagi sel kimia yang ditunjukkan dalam rajah 9?

G Magnesium Magnesium

Iron Desi

1== - --=- ~"1:~ -Sod'fum chlorid ' r£:= ;__ on e so Iution ~ :~:. ~= ..;;:.=-'=:: -- - -:.,...

Larutan natrium klorida

DIAGRAM 9 RAJAH 9 A The magnesium electrode ionises. Elektrod magnesium mengion B The iron electrode acts as negative terminal. Elekrod besi adalah terminal negatifsel C The electron flows from magnesium electrode to iron electrode through external circuit Elektron mengalir dari elektrod magnesium Ice elektrod besi melaluilitar luar. D If the iron electrode is replaced with copper electrode, a higher voltage is obtained. Jika elektrod best digantikan dengan elektrod kuprum, voltan sel akan meningkat. 28. The following equations represent some displacement reactions of metals. Persamaan berikut mewakili beberapa tindak balas penyesaran logam.

x + Y sulphate

~ Y + X SUlphate

X + Z sulphate ~ Z + X sulphate

Y + Z sulphate ~ no reaction.

x + Y sulfat X + Z sulfat Y + Z sulfat

~ Y + X sulfat ~ Z + X sulfat

~ tiada

tindak balas

The arrangement of metals X, Y and Z in ascending order of reactivity is Susunan logam X; Y dan Z mengikut susunan kereaktifan menaik adalah A X,Z, Y

B Y,Z, X

C Z,X, Y

n Z, Y,X

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MOZ@C SULIT 17 29 Diagram) 0 shows a series of tests carried out on solution Y. Rajah 10 menunjukkan satu siri uiian telah dtjalankan Ice atas larutan Y. Solution Y Larutan Y

NaOH <

II

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Green precipitate Mendakan hijau

Dilute hydrochloric acid followed by BaCh solution Asid hidroklorik diikuti dengan larutan BaC12

White precipitate Mendakan putih

DIAGRAM 10 RAJAH 10 Which of the following is most likely to be solution Y. Antara berikut manakah kemungkinan larutan y. A

lron(II) sulphate Ferum(Il) sulfat

B

Lead(II) sulphate Plumbum (II) sulfat

C D

Iron(II) chloride Ferum(Il) klorida Copper(II) carbonate Kuprum(Il) karbonat

30

Plastics can cause pollution because Plastik boleh menyebabkan pencemaran kerana

A

plastics are widely use in daily life plastik digunakan dengan meluas dalam kehidupan harian

B

plastics are biodegradable plastik adalah terbiodegradasi

C

burning of plastics can release toxic gases pembakaran plastik menghasilkan gas toksik

D

Some plastics can be recycled Setengah plastik boleh dikitar semula

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18 4541/1 31. The chemical equation represents the reaction between zinc and hydrochloric acid. Persamaan kimia mewakili tindak balas antara zink dengan asid hidroklorik. Zn(s) + 2HCl(aq), ~ ZnClz(aq) + H2(g)

Which of the following graphs of volume of hydrogen against time is correct for the above reaction? Antara graf isipadu hidrogen melawan masa berikut manakah adalah betul bagi tindak balas di atas?

A V

CV

-+------.t DV

32

Diagram 11 shows the structural formula of an organic compound. Rajah 11 menunjukkan formula struktur satu sebatian organik.

H

I

CH3 H

I

H

I

J

H-C-C-C-C-H

I H

I

H

DIAGRAM II

RAJAH11 Which of the following is the IUPAC name for the compound? Amara berikut manakah merupakan nama IUPAC bagi sebatian itu?

A B C D

Pent-2-ene 2-methylbut -I-ene 2-methylbut-2-ene 3-methylbut-l-ene

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Diagram 12 shows the set up of apparatus for a chemical reaction. Rajah 12 menunjukkan susunan radas bagi satu tindak balas kimia.

Magnesium strip Kepingan magnesium

Iron strip Kepingan ferum

c=+---- Agar-agar solution

Larutan agar-agar

DIAGRAM 12

RAJAH 12 Which of the following statements is true for the reaction? Amara pernyataan berikut yang manakah benar mengenai tindak balas itu? A B C D

34

Iron is reduced Ferum diturunkan Iron is an oxidising agent Ferum adalah agen pengoksidaan Magnesium releases electron Magnesium membebaskan elektron The oxidation number of magnesium decreases Nombor pengoksidaan magnesium berkurang

Which of the following is true of an exothermic reaction? Amara berikut manakah benar tentang tindak balas eksotermik? A B C D

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The temperature of the mixture decreases. Suhu campuran tindak balas menurun. The container becomes hotter. Bekas itu menjadi panas. Heat energy is absorbed from the surroundings. Tenaga haba diserap dari persekitaran. The heat energy is converted to kinetic energy. Tenaga haba ditukar kepada tenaga kinetik.

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MOZ@C SlnLIT 20 35 Which of the following conversions is an example of reduction?

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Antara penukaran berikut manakah eontoh penurunan? A

Iron(II) ion to iron(III) ion

Ionferum(Il) lrepada ton ferumtlll) B Chloride ion to chlorine gas Ion klorida lrepada gas klorin C Lead(ll) ion to lead atom Ion plumbum(Il) lrepada atom plumbum D Hydrogen sulphide to sulphur Hidrogen sulflda kepada sulfur 36

Which of the following fertilizers has the highest number of nitrogen atoms?

Manakah antara baja-baja berikut mengandungi bilangan atom nitrogenyang paling tinggi? 0.5 mol

B C

0.5 mol
D 37

(N~)3P04

A

1.0 mol NH 4CI

1.0 mol N~N03

Ammonia gas dissociates according to the following equation.

Gas ammonia terurai mengikutpersamaan berikut.

What is the total volume of gas produced if 112 em3 of ammonia gas dissociate at

STP?

[1 mol of gas occupies 22.4 dnr' at STP]

Berapakahjumlah isipadu gas yang terhasil jika 112 emJ gas ammonia terurai?

[J mole ofgas occupies 22.4 dm3 at STPj

A B C D

22.4cm3

67.2cm3

89.6cm 3

224.0cm 3

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MOZ@C SULIT 21 4541/1 38 Which ofthe following has the same volume as 71 g of chlorine gas, Ch at room condition? [Relative atomic mass: H=I; C=12; 0=16; S=32;CI=3S,S; N=14] Amara berikut manakah mempunyai isipadu yang sama dengan 71 g gas klorin, Cl2pada keadaan bilik? [Jisim atom relatif: H=l; C=12; 0=16; S=32;CI=35,5; N=14] A 16 g oxygen, 02 16goksigen B 64 g sulphur dioxide, S02 64g sulfur dioksida C 88 g of carbon dioxide, C
40 Which ofthe following solutions contain the same number of hydrogen ion, W? Antara larutan berikut manakah mengandungi bilangan ion hidrogen, F yang sama? [Avogadro number = 6.02 x 1023 mol" ] [Nombor Avogadro = 6.02 x 1r13 mol"] I 50 cm 3 of 1.0 mol dm" of nitric acid 50 cm 3 of 1.0 mol dm·3 asid nitrik II 100 cm 3 ofO,S mol dm'3 of hydrochloric acid 100 cm3 of0.5 mol dm" asid hidroklorik III 25 cm 3 of 1.0 mol dm? of sulphuric acid 25 em' of1.0 mol dm· 3 asid sulfurik IV 200 cm 3 ofO.S mol dm" ofethanoic acid 200 cm 3 of0.5 mol dm" asid etanoik A B C D

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41 The equation shows the reaction between sodium chloride solution and silver nitrate solution to produce silver chloride precipitate.

Persamaan menunjukkan tindak balas antara lartuan natrium lcJorida dan larutan argentum nitrat untuk menghasilkan mendakanargentumlcJorida. NaCI(aq) + AgN03(aq)

~

AgCl(s) + NaN03(aq)

200 cm 3 of 0.1 mol dm? sodium chloride solution reacts completely with excess silver nitrate solution.

200 em] 0.1 mol dm-3 larutan natrium lcJorida bertindakbalas lengkap dengan larutan argentum nitrat berlebihan. Calculate the mass ofprecipitate produced. [Relative atomic mass Ag= I08; CI=3S.5]

Hitungkanjisim mendakanyang terbentuk: [Jisim atom relatif Ag=108,' CI=35.5] A B

C D

2.78 g 2.87 g 3.78 g 3.87 g

42 Diagram 13 shows a racing car. The body of the car is made of substance Q.

Rajah 13 menunjukkansebuah kereta lumba. Badan kereta tersebut diperbuat daripada bahan Q. SubstanceQ

DIAGRAM 13

RAJAH 13 Substance Q has the following properties:

Bahan Q mempunyai ciri-ciri berikut: •

strong

lcuat •

• •

light ringan withstand high temperature tahan haba tinggi durable tahan lasak

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MOZ@C StnLIT 23 Which of the following is substance Q? Antara berikut manakah bahan Q? A Ceramic Seramik B Concrete Konlcrit C Plastic Plastik D Composite material Bahan komposit 43

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Two experiments are carried out as follows: Dua eksperimen telah dijalankan seperti berikut: Experiment I: 100 cm3 of 1.0 mol dm-3 hydrochloric acid is added to 10 g of Eksperimen I marble chips at 30°C. 100cm3 asid hidroklorik 1.0 mol dm-3 telah ditambah kepada 10 g cebisan marmar pada suhu 3ff'C Experiment II: 50 cnr' of 1.0 mol drn" hydrochloric acid is added to 10 g of Eksperimen II marble chips at 50°C. 50cm3 asid hidroklorik telah 1.0 mol dm-3 ditambah kepada 10 g cebisan marmar pada 50°C. Which of the following graphs shows the volume of carbon dioxide collected against time in both the experiments? Amara graf-graf berikut, manakah menunjukkan isipadu karbon dioksida yang dikumpu!melawan masa bagi kedua-dua eksperimen tersebut?

A

V

C V

~-----.-.t

B

V

-fL-------+t

D V

I

~-----.-.t

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24 4541/1 44 Table 5 shows the result obtained from the decomposition of hydrogen peroxide. Jadual 5 menunjukkan keputusanyang diperoleh dari penguraian hidrogen peroksida. Time/minute 0 I 2 3 4 5 6 Masa/minit Volume of
A B C D

2.0 crrr' min-I

3.0 cm3 min-I

4.0 cnr' min-I

12.0 cm 3 min')

45 The equation shows the reaction between a hydrocarbon with chlorine. Persamaan menunjukkan tindak balas antara sejenis hidrokarbon dan klorin.

H H H I

I

I

X + CI2 ---t. H - C-C-C- H I I I H CI CI Which ofthe following is the molecular formula of X? Antara berikut yang manakahformula molekul bag; X? A B

C

C2Hti CJHti C3Hs

D

C4HIO

46 Which of the following is a reducing agent when added to dilute hydrochloric acid? Amara berikut, yang manakah merupakan agen penurunan apabila ditambah asid hidroklorik cair? A

B C D

Copper Kuprum Magnesium Magnesium Lead(II) oxide Plumbum/H) oksida Silver nitrate Argentum nitrat

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47 Diagram] 4 shows the set up ofthe apparatus to study the redox reaction. Rajah 14 menunjukkansusunan radas untuk mengkaji tindak balas redoks.

Carbon B

CarbonA Karbon A

KarbonB

Solution X

SolutionY

LarutanX

Larutan Y .

-

:: -:.. . , ­ Sulphuric acid :::5-:-::::::::{.§. . Asid sulfurik

DIAGRAM 14 Carbon A is~egative terminal,

RAJAH 14

KarbonA merupakan terminal negatif. Which of the following are solution X and solution Y?

Antara berikut manakah merupakan larutan X dan larutan }7

Solution X

Larutan X A Iron(lI) sulphate Ferumtll) sulfa! B Iron(lIl) sulphate Ferum(IIJ) sulfa: C Acidified potassium dichromate(VI) Kalium dikromat(Vl) berasid D Acidified potassium manganat(VIl) Kalium manganat(VIl) berasid

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Solution Y Larutan Y Bromine water

Air bromin Potassium bromide

Kalium bomida Potassium chloride

Kalium klorida lron(II) sulphate

Ferumtll) sulfa:

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SULIT 26 48 The thermochemical ionic equation below represents the reaction between

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magnesium powder and iron(II) sulphate solution. Persamaan ion termokimia berikut mewakili tindak balas antara serbuk magnesium dan larutan ferum(ll) sulfat. Mg(s) + Fe 2+(aq} --.~

Mg 2+(aq} + Fe(s)

!:J. H = -189 kJ mol "

Calculate the increase in temperature when excess magnesium powder is added into 80 crrr' ofOA mol dm" iron(lI) sulphate solution. Hitungkan kenaikan suhu campuran ~bi/a serbuk magnesium yang berlebihan ditambah kepada 80 cm 3 0.4 mol dm' larutan ferumill} sulfat. [Specific heat capacity of solution = 4.0 J~'I °e- I • density of solution = 1 g em"] [Muatan haba tentu larutan = 4.0 Jg"/ °C , ketumpatan larutan = 1 g em" 1

A B C D

6.5°C

13.5°e

18.9°e

37.8°e

49 Diagram 15 shows the energy level diagram of the following chemical reaction. Rajah /S menunjukkan gambar rajah aras tenaga bagi tindak balas kimia berikut.

X+Y

- -... R+S

70kJ R+S

Energy Tenaga 200kJ

P+Q DIAGRAM 15 RAJAH /S Which ofthe following statements is true? Antara pernyataan-pemyataan berikut, yang manakah benar? A B

C D

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The heat of reaction is 70 kJ Haba tindak balas bagi tindak balas ialah 70 kJ. Heat is released when P reacts with Q to produce R and S. Haba terbebas apabila P bertindak balas dengan Q untuk menghasilkan R dan S. The activation energy is 200 kJ. Tenaga pengaktifan bagi tindak balas adalah 200 kl. Rand S are more stabil than P and Q. R dan S adalah lebih stabil daripada P dan Q.

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Which of the following, molecules cannot function effectivelyas a cleansingagent in hard water? Antara molekul-molekul berikut, yang manakah tidak berkesan sebagai bahan pencuci dalam air fiat?

A B C D

CH3(CH2)14COOCH3 CH 3(CH2)14COONa

CH3(CH2)1IOS03Na

CH3(CH2)14COOH

END OF QUESTION PAPER

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PEPERIKSAAN PERCUBAAN SPM 2008 NEGERI KEDAH DARUL AMAN MARKING SCHEME CHEMISTRY PAPER 1

Question Number

Answer

Question Number

Answer

1

A

26

D

2

D

27

B

3

C

28

B

4

D

29

A

5

A

30

C

6

B

31

B

7

A

32

C

8

C

33

C

9

D

34

B

10

B

35

C

11

C

36

A

12

A

37

D

13

D

38

B

14

D

39

A

15

A

40

C

16

B

41

D

17

A

42

D

18

B

43

C

19

C

44

C

20

D

45

B

21

B

46

B

22

B

47

A

23

C

48

C

24

A

49

C

25

B

50

B

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