Example Form 1 Science Paper (With Answers)

ANSWERS

2

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Section A

[40 marks] marks] Answer all questions. questions.

1

Diagram 1 shows a procedure on how to measure the volume of a stone.

Diagram 1 (a)

Name the method applied in this activity. Water displacement method. [1 mark ]

(b)

What is the volume of the stone and the cork? (i)

(c)

Stone: 5

(ii)

Cork: 5

[2 marks] marks]

Name two precautionary steps that have been taken when using a measuring cylinder. Place the measuring cylinder on the lever leve r surface. Readings have to be at the meniscus level of the water. Readings have to be made at eye level. (Accept any 2 answers) [2 marks] marks]

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ANSWERS

3

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(d) Tick (✓) at the correct eye position while taking a reading of the volume of water in the measuring cylinder. [1 mark ]

✓

2

(a)

Diagram 2 shows some examples of cell organization in the human body. (i)

Which of the following is a cell? Tick (✓) in the box provided.

✓

Diagram 2

[1 mark ] (ii)

Circle the words in the box below to show two other examples of cells.

Sperm

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Stomach


Brain

Ovum

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ANSWERS

4

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[2 marks] (b)

Draw lines to match each type of system with its function.

System

(i)

(ii)

(iii)

Function

Removes excretory waste from the body.

Absorbs oxygen and eliminate carbon dioxide from the body.

Transports substances like food, oxygen and excretory products in the body. [3 marks]

3

(a)

Diagram 3 shows the composition of air.

X

Oxygen

Y

Nitrogen

Z

Carbon dioxide

Diagram 3 (i)

On Diagram 3, label gases X, Y and Z using the following words. Oxygen

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Nitrogen

Carbon dioxide

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5

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[3 marks] (ii)

What is the percentage of nitrogen gas in the air? 78% [1 mark ]

(b)

Draw two lines to match carbon dioxide with its properties.

Properties

Carbon dioxide

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Does not support combustion



Very soluble in water

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Turns moist red litmus paper blue

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Very soluble in sodium hydroxide solution [2 marks]

4

Diagram 4 shows the classification of matter. Matter

Mixtures

Elements

Q : Metals

P : Compounds

R : Non-metals Diagram 4

(a)

Circle three matters from the box below to represent P, Q and R in Diagram 4.

Compounds

Organisms

Microorganisms

Metals

Gas

Non-metals

[3 marks]

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(b)

6

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Complete the following table by naming the types of substances made up of the given types of particles.

Types of particles

Type of substances

(i) Element

(ii) Compound

[2 marks] (c)

What is the smallest particle in an element? Atom [1 mark ]

5

Diagram 5.1 shows the requirements for combustion to occur, U, V and W.

Diagram 5.1

(a)

Tick (✓) three requirements from the box below to represent U, V and W. Heat

Carbon dioxide

✓

Oxygen

Fuel

✓

✓

Fire

[3 marks]

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(b)

7

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Based on Diagram 5.1, suggest a method that can be used to put out fire.

By blocking the oxygen supply. [1 mark ]

(c)

Diagram 5.2 shows the set-up of apparatus to study the products of the combustion of a candle.

Diagram 5.2 It is observed that droplets of a clear liquid are formed on the inside wall of the beaker. (i)

Name the liquid formed. Water [1 mark ]

(ii)

Suggest a test to identify the liquid stated in c(i). Test the liquid with cobalt chloride paper. The liquid turns the blue cobalt chloride paper to pink. [2 marks]

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(d)

8

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Use four of the substances in the box below to write a word equation for the chemical reaction that takes place during the combustion of the candle.

Carbon dioxide

water

heat

Hydrocarbon + oxygen

light

hydrocarbon

oxygen

carbon dioxide + water + heat +light

[1 mark ] 6

A ball is thrown up into the air as shown in Diagram 6.

Diagram 6 (a)

What form of energy does the ball have at position X? Potential energy and kinetic energy. [2 marks]

(b)

Identify the position where the ball has maximum a nd minimum potential energy and kinetic energy respectively. Maximum

Minimum

Potential energy

Y

Z

Kinetic energy

Z

Y [4 marks]

(c)

State the energy changes involving the ball as it moves from W to Y. Potential energy to kinetic energy + potential energy to potential energy [2 marks]

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9

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Section B

[20 marks] Answer all questions.

7

(a)

Diagram 7 shows object X, which is made from metal P and metal Q. Object X is found in a fire alarm. P Q

(i)

What is object X? Bimetallic strip [1 mark ]

(ii)

Give two suitable metals that can be used to form object X. 1. Brass

2. Iron [2 marks]

(b)

Briefly explain how object X functions in the fire alarm. In case of fire, the temperature rises and the b imetallic strip expands. One of the metal expand more than the other causing the bimetallic strip to bend and complete the circuit. Thus, the alarm is activated. [3 marks]

(ii)

Give two other examples of appliances that use object X. 1.

Electric iron

2.

Electric oven [2 marks]

(c)

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(i)

Draw a diagram to show how object X appears when heated.


[2 marks]

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ANSWERS 8

10

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Diagram 8 shows an experiment carried out in the laboratory to study the effect of mass on heat transfer.

Diagram 8 The water in beaker A is heated for 2 minutes. Then the 100g bob is transferred into beaker P and the 200g bob is transferred into beaker Q respectively. (a)

State the variables involved in the experiment. (i) Manipulated variable: Mass of iron bob (ii) Responding variable: Increase in temperature of water (iii) Constant variable: The volume of water in beaker P and Q [3 marks]

(b)

Write a suitable hypothesis for this experiment. For objects of the same material and temperature, the objects with more mass contains more heat. [2 marks]

(c)

What inference can be made based on Diagram 8? The amount of heat in an object depends on its mass. [1 mark ]

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(d)

11

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The following table shows the readings recorded by thermometer X and thermometer Y. Complete the table. Thermometer X

Thermometer Y

Initial temperature (°C)

25

25

Final temperature (°C)

42

Increase in temperature (°C)

(ii)

17

(i)

46 21 [2 marks]

(e)

State the relationship between the mass of an iron bob and the amount of heat contained by the bob. The greater the mass of an iron bob, the larger the amount of the heat it contains. [2 marks]

END OF QUESTION PAPER

Prepared by,

Checked by,

Approved by,

________________

_________________

_______________

(Ms. Lim Ann Chee)

(Mr. Mahendran Viswanathan)

(Mr. Rohaizi Rastam)

Curriculum Leader

Head of Department

Subject Teacher

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Example Form 1 Science Paper (With Answers)

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