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Primary 4 Science Materials Quiz

Free P4 Science Materials quiz, Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 4 Science From Real Exams Generated by DeepSeek V4 Flash Sample 01 Updated 2026-08-17

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Questions

Primary 4 Science Quiz - Materials

Name: ____________________________________________ Class: ____________________________________________ Date: ____________________________________________ Score: ______________ / 20

Duration: 30 minutes Total Marks: 20

Instructions:

Read each question carefully.
Write your answers in the spaces provided.
Show your working or reasoning where necessary.
For multiple-choice questions, circle the correct letter.

Section A: Multiple-Choice Questions (10 Questions x 1 Mark = 10 Marks)

Circle the correct option (A, B, C, or D) for each question.

1. Sean has three blocks: a wooden block, an iron block, and a foam block. They have the same size. Which of the following is correct?

	Lightest	Heaviest
A	foam block	iron block
B	iron block	foam block
C	wooden block	iron block
D	foam block	wooden block

Answer: _______________

2. Which of the following is a property of a gas?

A) It has a fixed shape. B) It has a fixed volume. C) It can be compressed easily. D) It cannot flow.

Answer: _______________

3. A student places a pebble, some cooking oil, and some oxygen into three separate containers. Which of the following correctly describes the shapes and volumes of these materials?

	Pebble	Cooking Oil	Oxygen
A	fixed shape, fixed volume	fixed shape, fixed volume	no fixed shape, no fixed volume
B	fixed shape, fixed volume	no fixed shape, fixed volume	no fixed shape, no fixed volume
C	fixed shape, no fixed volume	fixed shape, no fixed volume	no fixed shape, no fixed volume
D	no fixed shape, fixed volume	no fixed shape, no fixed volume	fixed shape, fixed volume

Answer: _______________

4. An iron rod is heated. Which of the following is most likely to happen to the iron rod?

A) It expands. B) It contracts. C) It changes into a gas. D) It stays the same size.

Answer: _______________

5. Which of the following would be the BEST material to use for the handle of a frying pan?

A) Copper B) Iron C) Wood D) Silver

Answer: _______________

6. Mary has a bag of sugar. She pours all the sugar into a bowl. Which of the following statements about the sugar is true?

A) The shape of the sugar changes. B) The volume of the sugar changes. C) The mass of the sugar changes. D) The sugar becomes a liquid.

Answer: _______________

7. The diagram below shows a glass of water with an ice cube floating in it.

Diagram for Q7 (P4 Science)

Generated diagram for Q7.

What will most likely happen to the water level when the ice cube melts completely?

A) It will go down. B) It will stay the same. C) It will go up. D) It will overflow the glass.

Answer: _______________

8. A piece of cotton cloth and a plastic sheet are both used to cover a table. Which statement about the materials is true?

A) The cotton cloth is stronger than the plastic sheet. B) The plastic sheet is waterproof, while the cotton cloth is not. C) The cotton cloth allows light to pass through, but the plastic sheet does not. D) The plastic sheet is flexible, but the cotton cloth is not.

Answer: _______________

9. A rubber band can be stretched. After stretching, it returns to its original shape. Which property does the rubber band show?

A) Brittleness B) Elasticity C) Hardness D) Rigidity

Answer: _______________

10. A student puts a few drops of water on a clean, flat glass plate and on a clean, flat wax paper plate. Which of the following will most likely be observed?

A) The water spreads out on both plates. B) The water forms round droplets on the glass plate but spreads out on the wax paper. C) The water forms round droplets on the wax paper but spreads out on the glass plate. D) The water forms round droplets on both plates.

Answer: _______________

Section B: Short-Answer Questions (5 Questions x 2 Marks = 10 Marks)

Write your answers in the spaces provided.

11. Name the three states of matter. For each state, state whether it has a fixed shape or not.

________________________________________________________________________________________________________________________________________________________________

12. A student wants to separate a mixture of sand and iron filings. She has a magnet, a sieve, and a glass of water. Describe how she can use a magnet to separate the mixture.

________________________________________________________________________________________________________________________________________________________________

13. Look at the picture below.

Diagram for Q13 (P4 Science)

Generated diagram for Q13.

Which of the materials, A, B, or C, is most likely a gas? Explain your answer.

________________________________________________________________________________________________________________________________________________________________

14. Explain why a steel spoon feels colder to the touch than a wooden spoon at the same room temperature.

________________________________________________________________________________________________________________________________________________________________

15. A student leaves a wet towel on a clothesline under the sun. After a few hours, the towel is dry. Explain why this happens in terms of changes in the state of water.

________________________________________________________________________________________________________________________________________________________________

Section C: Application Questions (5 Questions x 2 Marks = 10 Marks, but total marks for quiz is 20)

Read each question carefully and write your answers in the spaces provided.

**(Note: Section C has 5 questions, each worth 2 marks. The total for the quiz is 20 marks: Section A (10 x 1 mark) + Section B (5 x 2 marks) + Section C (5 x 2 marks) = 10 + 10 + 0 = 20? Correction: Section C is included in the 20 marks total. Let's adjust: Section A = 10 marks, Section B = 10 marks. Section C will be 0 marks? That's not right. Let's set: Section A = 10 questions x 1 mark = 10 marks. Section B = 5 questions x 2 marks = 10 marks. Total = 20 marks. Section C will be omitted to stay within 20 marks? Actually, the requirement is 20 questions. If we have 10 MCQ and 5 short answer, that's 15 questions. I need 5 more questions to reach 20. I will adjust: Section A (10 questions x 1 mark) = 10 marks. Section B (10 questions x 1 mark) = 10 marks. Total = 20 marks. I will restructure.)

Correction to Section Structure:

Section A: Multiple-Choice Questions (10 questions x 1 mark = 10 marks)
Section B: Fill-in-the-Blanks & Short-Answer Questions (10 questions x 1 mark = 10 marks)

This gives exactly 20 questions and 20 marks.

Let me rewrite the quiz with the corrected structure.

Primary 4 Science Quiz - Materials

Name: ____________________________________________ Class: ____________________________________________ Date: ____________________________________________ Score: ______________ / 20

Duration: 30 minutes Total Marks: 20

Instructions:

Read each question carefully.
Write your answers in the spaces provided.
For multiple-choice questions, circle the correct letter.

Section A: Multiple-Choice Questions (10 Questions x 1 Mark = 10 Marks)

Circle the correct option (A, B, C, or D) for each question.

1. Sean has three blocks: a wooden block, an iron block, and a foam block. They have the same size. Which of the following is correct?

	Lightest	Heaviest
A	foam block	iron block
B	iron block	foam block
C	wooden block	iron block
D	foam block	wooden block

Answer: _______________

2. Which of the following is a property of a gas?

A) It has a fixed shape. B) It has a fixed volume. C) It can be compressed easily. D) It cannot flow.

Answer: _______________

3. A student places a pebble, some cooking oil, and some oxygen into three separate containers. Which of the following correctly describes the shapes and volumes of these materials?

	Pebble	Cooking Oil	Oxygen
A	fixed shape, fixed volume	fixed shape, fixed volume	no fixed shape, no fixed volume
B	fixed shape, fixed volume	no fixed shape, fixed volume	no fixed shape, no fixed volume
C	fixed shape, no fixed volume	fixed shape, no fixed volume	no fixed shape, no fixed volume
D	no fixed shape, fixed volume	no fixed shape, no fixed volume	fixed shape, fixed volume

Answer: _______________

4. An iron rod is heated. Which of the following is most likely to happen to the iron rod?

A) It expands. B) It contracts. C) It changes into a gas. D) It stays the same size.

Answer: _______________

5. Which of the following would be the BEST material to use for the handle of a frying pan?

A) Copper B) Iron C) Wood D) Silver

Answer: _______________

6. Mary has a bag of sugar. She pours all the sugar into a bowl. Which of the following statements about the sugar is true?

A) The shape of the sugar changes. B) The volume of the sugar changes. C) The mass of the sugar changes. D) The sugar becomes a liquid.

Answer: _______________

7. A piece of cotton cloth and a plastic sheet are both used to cover a table. Which statement about the materials is true?

Answer: _______________

8. A rubber band can be stretched. After stretching, it returns to its original shape. Which property does the rubber band show?

A) Brittleness B) Elasticity C) Hardness D) Rigidity

Answer: _______________

9. A student puts a few drops of water on a clean, flat glass plate and on a clean, flat wax paper plate. Which of the following will most likely be observed?

Answer: _______________

10. Which of the following groups contains only solids?

A) Ice, wood, oil B) Sand, water, stone C) Rock, metal, glass D) Juice, brick, plastic

Answer: _______________

Section B: Fill-in-the-Blanks & Short-Answer Questions (10 Questions x 1 Mark = 10 Marks)

Write your answers in the spaces provided.

11. The three states of matter are _________ , _________ , and _________.

12. A _________ has a fixed shape, while a _________ takes the shape of its container and has a fixed volume.

13. A student wants to separate a mixture of sand and iron filings. Describe one method she can use to separate them.

________________________________________________________________________________________________________________________________________________________________

14. A steel spoon feels colder to the touch than a wooden spoon at the same room temperature because steel is a _____________ conductor of heat.

15. When a wet towel is left under the sun, it becomes dry because the water in the towel ____________ into water vapour.

16. The ability of a material to be stretched and then return to its original shape is called _____________.

17. When water is put into the freezer, it changes from ____________ to ____________.

18. A material that allows heat to pass through it easily is called a good _____________ of heat.

19. A brick is an example of a _________ (solid / liquid / gas).

20. Glass is _________ (transparent / opaque), which means it allows light to pass through.

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Answers

Primary 4 Science Quiz - Materials: Answer Key

Total Marks: 20

Section A: Multiple-Choice Questions (10 Questions x 1 Mark = 10 Marks)

1. Answer: A Explanation: The three blocks have the same size (volume). Foam is the lightest material, iron is the heaviest, and wood is in between. Matter has mass, and different materials of the same size can have different masses. Marking Note: 1 mark for A.

2. Answer: C Explanation: A gas does not have a fixed shape (it takes the shape of its container) and does not have a fixed volume (it can be compressed or it expands to fill the container). Gases can flow. Marking Note: 1 mark for C.

3. Answer: B Explanation:

A pebble is a solid → fixed shape and fixed volume.
Cooking oil is a liquid → no fixed shape (takes shape of container), fixed volume.
Oxygen is a gas → no fixed shape, no fixed volume (fills the container). Marking Note: 1 mark for B.

4. Answer: A Explanation: When most solids (including metals like iron) are heated, they gain heat energy and expand (increase in size). This is an effect of heat gain. Marking Note: 1 mark for A.

5. Answer: C Explanation: The handle of a frying pan gets hot from the pan. You need a material that is a poor conductor of heat so that the handle does not get too hot to hold. Wood is a poor conductor of heat. Copper, iron, and silver are all metals and are good conductors of heat. Marking Note: 1 mark for C.

6. Answer: A Explanation: Sugar is a solid (a collection of small crystals). When you pour it from the bag into the bowl, the overall shape of the sugar changes to match the bowl's shape, but each sugar crystal keeps its own fixed shape. The volume and mass of the sugar do not change. The sugar does not melt into a liquid. Marking Note: 1 mark for A.

7. Answer: B Explanation: Plastic sheets are commonly used to because they are waterproof, meaning water cannot pass through them. Cotton cloth will absorb water and is not waterproof. Cotton is flexible, and plastic sheets are also flexible. Neither is necessarily stronger than the other in all ways. Marking Note: 1 mark for B.

8. Answer: B Explanation: Elasticity is the property of a material to return to its original shape and size after being stretched or squashed. A rubber band is a common example of an elastic material. Marking Note: 1 mark for B.

9. Answer: C Explanation: Water molecules are attracted to each other (cohesion) and to glass (adhesion). On glass, adhesion is stronger, so water spreads out. Wax paper is water-repellent (hydrophobic); the attraction between water molecules is stronger than their attraction to the wax paper, so the water forms round droplets. Marking Note: 1 mark for C.

10. Answer: C Explanation: Rock, metal, and glass are all solids. Oil (in A) and water (in B) are liquids. Juice (in D) is a liquid. Marking Note: 1 mark for C.

Section B: Fill-in-the-Blanks & Short-Answer Questions (10 Questions x 1 Mark = 10 Marks)

11. Answer: solid, liquid, gas Explanation: These are the three fundamental states of matter. The answer can be in any order, but "solid, liquid, gas" is the most common sequence. Marking Note: 1 mark for all three correct. Award 1 mark if any two are correct. Award 0 marks if fewer than two are correct or if the terms are mixed up.

12. Answer: solid, liquid Explanation: A solid has a fixed shape and a fixed volume. A liquid has a fixed volume but takes the shape of its container. Marking Note: 1 mark only if both blanks are filled correctly ("solid" for first, "liquid" for second). Accept "solid" and "liquid". Common Misconception: Students may write "gas" for the second blank. A gas does not have a fixed volume.

13. Answer: Use a magnet to attract the iron filings away from the sand. Explanation: Iron is a magnetic material, while sand is not. By passing a magnet through or over the mixture, the iron filings will be attracted to the magnet, leaving the sand behind. Marking Note: 1 mark for mentioning using a magnet to separate. Must mention that iron is magnetic/attracted to the magnet. Common Misconception: Students may describe adding water to float the sand, which could also work but is less direct. Accept any correct physical separation method (e.g., using a sieve if the particles are different sizes, or using a magnet). The most direct method given the equipment is using a magnet.

14. Answer: good Explanation: Steel is a metal and a good conductor of heat. When you touch the steel spoon, heat flows quickly from your (warmer) hand to the (cooler) steel spoon, making it feel cold. Marking Note: 1 mark for "good". Accept "better" if the student adds a comparison to wood (e.g., "steel is a better conductor of heat than wood").

15. Answer: evaporates Explanation: Evaporation is the process where a liquid changes into a gas. The heat from the sun causes the water in the wet towel to gain heat and change into water vapour (gas), which escapes into the air. This leaves the towel dry. Marking Note: 1 mark for "evaporates". Accept "turns into water vapour" or "changes into a gas".

16. Answer: elasticity Explanation: This is the property of an elastic material. When a force is applied (stretching), the material deforms, and when the force is removed, the material returns to its original shape. Marking Note: 1 mark for "elasticity".

17. Answer: liquid, solid (order: liquid to solid) Explanation: When water is put into a freezer, it loses heat. The temperature drops, and the water freezes, changing from a liquid state to a solid state (ice). Marking Note: 1 mark only if the order is correct (liquid → solid). Accept "water" for liquid and "ice" for solid.

18. Answer: conductor Explanation: A conductor is a material that allows energy (heat or electricity) to pass through it easily. Metals are good conductors of heat. Marking Note: 1 mark for "conductor". Accept "heat conductor".

19. Answer: solid Explanation: A brick has a fixed shape and a fixed volume, which are properties of a solid. Marking Note: 1 mark for "solid".

20. Answer: transparent Explanation: Transparent materials, like clear glass, allow light to pass through so you can see objects clearly on the other side. Opaque materials do not allow light to pass through. Marking Note: 1 mark for "transparent". Do not accept "clear" as a direct substitute, but it may show understanding. The correct scientific term is "transparent".