SEKOLAH MENENGAH KEBANGSAAN VALDORSUNGAI BAKAP,14200 SUNGAI JAWI

PULAU PINANG

UJIAN KEMAJUAN 2 (2011)SCIENCE

FORM ONETIME: 1 HOUR

NAME:……………………………………….. FORM:…………………

Instruction: Answer ALL the questions in the answer sheet provided.

SECTION A

1 The table shows four substances P, Q, R and S with different densities.

Substances Density (g cm-3)P 0.24Q 0.92R 2.70S 19.23

Which of the following will sink in water of density 1 g cm-3?

A P and QB P and RC R and SD Q and S

2 Table shows three types of liquid with their respective densities.

Liquid Density /g cm-3

X 1.0

Y 0.7

Z 13.6

Which of the following figures correctly shows the positions of X, Y and Z?A

X

Y

B

Y

Z

X

Z

C

D

3 The following information shows the processes of changes of state in matter.

Process P

Process Q

Process R

Which of the following represents P, Q and R?

P Q RA Condensation Boiling MeltingB Boiling Condensation MeltingC Melting Boiling CondensationD Melting Condensation Boiling

4 Table 2 shows four substances with different densities.

Substances Density /g cm-3

Ice 0.9Iron 7.9Oil 0.8

Mercury 13.6 Table 2

Given that density of water is 1.0 g cm-3, which substances can float on water?

A Ice and oilB Ice and ironC Oil and mercuryD Iron and mercury

5 P, Q and R are steps to separate a mixture of sand and salt.

P Q R Salt is left in the evaporating dish

X

Z

Y

Y

X

Z

Solid

Liquid

Gas

Liquid

Gas

Liquid

Which of the following correctly represent P, Q and R?

P Q RA Filter the solution Stir and dissolve the

mixtureEvaporate the salt solution

B Filter the solution Evaporate the salt solution

Stir and dissolve the mixture

C Stir and dissolve the mixture

Filter the solution Evaporate the salt solution

D Stir and dissolve the mixture

Evaporate the salt solution

Filter the solution

6 Which of the following is a correct example of a compound and mixture?

Compound MixtureA Sea water AirB Oxygen WaterC Air OxygenD Water Sea water

7 The diagram shows classification of matter.

Which of the following are examples of P, Q and R?

P Q RA Air Aluminium SulphurB Water Iron CarbonC Sugar Copper ZincD Tin Petroleum Zinc

8 The diagram shows a liquid fertilizer used by a farmer for his crops. After using it, his crops become stunted.

Element

Matter

P Mixture

RQ

P - Dissolving in water

Q - Using a magnet

R - Evaporating

S - Filtrating

Sulphur Carbon Mercury Copper

Which element is not found in the liquid fertilizer?

A NitrogenB PhosphorusC SulphurD Chlorine

9 Which of the following represents an element?

A B

C D

10 The steps below are used to separate a mixture of three substances, sand, iron powder and common salt crystals.

Which of the following is the correct sequence of steps to separate the three substances?

A P → Q → R → SB Q → P → S → RC S → Q → P → RD P → R → S → Q

11 The following list contains the names of some metals and non-metals.

Which of the following classifications is correct?

A Metal Non-metalCarbonCopper

Sulphurmercury

B Metal Non-metalMercuryCopper

SulphurCarbon

C Metal Non-metalSulphurMercury

CarbonCopper

D Metal Non-metalSulphurCarbon

MercuryCopper

12 Which of the following is true about copper, mercury and gold at room temperature?

A DuctileB MalleableC In solid stateD Allow electric current to flow through

13 The table shows the percentage of three gases in inhaled and exhaled air.

GasPercentage of gas

Inhaled air Exhaled air

Nitrogen 78 78

Oxygen 21 16

Carbon dioxide 0.03 4

The percentage of oxygen gas decreases because it

A is trapped in the heartB is used in respirationC is lost through transpirationD flows through the whole body

14 What is the most suitable test to confirm the presence of oxygen?

A Use lime waterB Use a glowing splinterC Use litmus paperD Use sodium hydroxide solution

15 Which of the following is true about carbon dioxide?

A It is not colorless B Not soluble in waterC Very soluble in sodium hydroxideD Changes moist red litmus paper to blue.

ANSWER FOR PART A

1. A B C D 9. A B C D2. A B C D 10. A B C D3. A B C D 11. A B C D4. A B C D 12. A B C D5. A B C D 13. A B C D6. A B C D 14. A B C D7. A B C D 15. A B C D8. A B C D -END OF QUESTIONS FOR PART A-