julai test

7/27/2019 Julai Test

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SECTION A (10 MARKS)

1. What is the melting point of pure water?

A 0°C

B -5°C

C 100°C

D 107°C

2. What happen to the temperature when ice melts?

A VaryB IncreaseC DecreaseD Remain constant

3. Which of the following pairs are correctly matched?

A

B

C

D

4. What is the suitable method to obtain salt crystal from a salt solution?

A. Filtrate the solutionB. Evaporate the solution

C. Distill the solution in flaskD. Put the solution in freeze

5. Which of the following technique would you use to separate water and alcohol?

A. EvaporationB. SublimationC. Simple distillationD. Fractional distillation

6. Which of the following elements are non-metals?

2

Substances Particle

Chlorine atoms

Carbon dioxide atoms

Sodium chloride molecules

Lead bromide ions



A. Copper, iron, goldB. Copper, carbon, goldC. Carbon, chlorine, sulphur D. Zinc chlorine, sulphur

7. Which of the following is a common use of non-metal?

A. To make the blade of knivesB. For making the bodies of car C. In the production of telephone wireD. To insulate the handle of cooking pans

8. Which of the following is true for endothermic reaction?

A. Heat is released to the surroundings

B. The temperature of the solution decreasesC. The pressure of the surroundings increasesD. The products have less energy than the reactants

9. The diagram shows paper burning.

What type of change is taking place?

A. Chemical changeB. Rate of change

C. Physical changeD. Colour change

10. Why crystallization of copper (II) sulphate is considered a physical change?

A. No new substance is formedB. New substance is formedC. More heat is absorbed during the reactionD. Chemical bonds between particles take place

3



SECTION B (15 MARKS)

1. Diagram 2 shows an experiment to obtain pure water from salt water.

(a) State the variables in this experiment.

i. Manipulated variable:

……………………………………………………………………………[ 1 mark]

ii. Responding variable:

………………………………………………………………………[ 1 mark]

(b) State one hypothesis for this experiment.

………..……………………………………………………………………………[ 1 mark]

(c) The boiling point of the distillate is 100 0C. What is the inference?

…………………………………………………………………..............................

………………………………………………………………….............................[ 1 mark]

(d) What is the change of state in the Leibig condenser?

4



…….…………………………………………………………….............................[ 1 mark]

2. Diagram 3 shows the Periodic Table with some elements denoted by letters P,R,Sand T.

a) What is the name of the

i. Vertical column: ……………………………………………………….[ 1 mark]

ii. Horizontal row: ………………………………………………………..[ 1 mark]

b) What property changes from P to R?

………………………………………………………………………….[ 1 mark]

c) Give one physical property of S.

………………………………………………………………………....[ 1 mark]

d) What is the electron number of P?

……………………………..

[ 1 mark]

5



3. Diagram 3 shows an experiment done by a student.

(a) State the type of chemical reaction in both beakers.i. Beaker A.

………………………………………………………………………………

ii. Beaker B.

………………………………………………………….………………......(2 marks)

(b) Give inference for your answer in (a).

.....................………………………………………………….............................. ………………………………………………………………….............................

[ 1 mark]

(c) Name the variable involved in this experiment.

i. Manipulated variable.

……………………………………………………………………………

6



iii. Constant variable.

…………………………………………………………………………….(2 marks)

ANSWER SHEET:

1. ( A ) ( B ) ( C ) ( D )

2. ( A ) ( B ) ( C ) ( D )

3. ( A ) ( B ) ( C ) ( D )

4. ( A ) ( B ) ( C ) ( D )

5. ( A ) ( B ) ( C ) ( D )

6. ( A ) ( B ) ( C ) ( D )

7. ( A ) ( B ) ( C ) ( D )

8. ( A ) ( B ) ( C ) ( D )

9. ( A ) ( B ) ( C ) ( D )

10. ( A ) ( B ) ( C ) ( D

7

10



SMK DAMANSARA UTAMA

SEKOLAH KLUSTER KECEMERLANGAN

PEPERIKSAAN JULAI TAHUN 2011

TINGKATAN 4

SCIENCE

40 MINIT

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DI BERITAHU

1. This paper consists of 7 printed pages.

2. This paper consists of Section A and Section B. Answers both section.

3. Answer questions in question paper.

NAME : _____________________________________

CLASS : _____________________________________

TEACHER : _____________________________________

Prepared by, Checked by,

______________________ _______________________

Pn. Noor Hasmida bt. Abdullah Pn. Khoo Chiew Gaik

GKMP Sains dan Matermatik

Kertas soalan ini mengandungi 7 halaman bercetak termasuk muka hadapan

julai test

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