Science Form 1 - Model Question

SCIENCE PAPER 2 Part A (40 marks) 1. Draw lines ( lukis garisan) to match the symbols with the hazardous substances. Concentrated acids

Radioactive

Alcohol Radium Sodium

Corrosive

Flammable

Concentrated Alkali ( 5 marks) 2. The table below shows the results of the experiment. Calculate the period for one complete swing. Length of the pendulum Period for 10 complete swings

10 20 11.0 1 3.9

30 1 6.4

40 1 8.5

50 20.0

Period for one complete swings (5 marks) Based on the table, plot a bar chart of the period for one complete swing against the length of the pendulum. ( lukis geraf bar)

(3 marks)

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3. In an activity, a student collects some water from a burette in an empty beaker. Below is the information recorded by the student. • • •

Initial volume reading = 12 ml Final volume reading = 46 ml Number of drops of water release = 40 drops

Based on the information given, answer the following questions. i. What is the volume of water in the beaker? ___________ml ii. What is the volume of one drop of water? _____________ml iii Write your answer for ii in standard form. ________________ml

( 3 marks)

iv. Why is necessary (mengapa kah perlu) to measure 40 drops of water instead of just one drop? ______________________________________________________

( 2 marks)

4. In a box below, draw a typical plant cell and an animal cell.(Lukis gambar sel tumbuhan dan gambar sel haiwan) . Label the diagram with Nucleus

cytoplasm

cell membrane

Plant cell

(Drawing 1 +1. label 6 marks)

cell wall

vacuole

chloroplast

Animal cell

( 8 marks)

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5.

a. What is meant by … i. unicellular organism? _____________________________________________ ii. Give two examples of unicellular organism : _____________and _______________ iii. Give two examples of multicellular organism: ___________and __________________ b. Define ( beri maksud) the term ‘ cell’: _________________________________________________________ i. Give three examples of cell in our body. : _____________, ______________ and ________________ ( 9 matrks)

6. a. Draw the arrangement of particles in solid, liquid and gas. solid

liquid

gas

b. Give two examples of liquid (beri 2 contoh cecair) _______________ _______________ ( 5 marks)

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Part B ( 20 marks) 7. Study the diagram below, state the arrangement of particles in each of the object.

water

frog

flower

coffee

scissors

slippers

a. Arrangement of particles in: (Susunan zarah-zarah dalam:-) Water : ____________________________________________________ Frog : ____________________________________________________ Flower : ___________________________________________________ Coffee : ___________________________________________________ Scissors : __________________________________________________ Slippers : ___________________________________________________ ( 6 marks)

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b. Group all the objects above into 2 groups according of their arrangement of particles.

Water, frog, coffee, scissors, slippers, flower

Arrangement of particles

Name of objects

( 4 marks)

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8. A group of students carried out two experiments about diffusion of copper sulphate crystal, as shown in the diagram below. The observations of the experiments are made after a few days. ( Sekumpulan pelajar menjalankan dua eksperimen mengenai resapan zarah-zarah kuprum sifat seperti ditunjukan dalam rajah di bawah). Pemerhatian dilakukan selepas beberapa hari)

a. State variable that is manipulated :_______________________________________________ constant

: _______________________________________________

responding : _______________________________________________ (3 marks) b. What can be observed after a few days? Experiment 1: ____________________________________________________ Experiment 2 : ____________________________________________________ ( 2 marks) c. Give one inference for your answer. ________________________________________________________________( 1 mark)

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d. In which experiment does diffusion take place faster? ________________________________________________________________( 1 mark)

e. Give reason for your answer in (d) ________________________________________________________________( 1 mark) f. What is the conclusion of this experiment? ________________________________________________________________( 2 mark)

KERTAS SOALAN TAMAT

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