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Primary 4 Science Matter Quiz
Free Exam-Derived Primary 4 Science Matter quiz with questions and answers for Singapore students. This page is rendered as a direct URL so the questions and answers can be discovered without pressing in-page buttons.
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Questions
P4 Science Quiz: Matter
Questions: 20
Time: 30 minutes
Total Marks: 40
Instructions:
- Answer all questions
- Write your answers clearly in the spaces provided
- Show your working for calculation questions
Section A: Multiple Choice Questions (10 marks)
Choose the correct answer. Write 1, 2, 3 or 4 in the brackets.
1. Which is NOT matter? (2 marks)
- air
- water
- shadow
- eraser
Answer: ( )
2. Which state of matter has a definite shape and definite volume? (2 marks)
- solid
- liquid
- gas
- all of the above
Answer: ( )
3. When ice melts, it changes from: (2 marks)
- liquid to solid
- solid to liquid
- gas to liquid
- liquid to gas
Answer: ( )
4. Which process changes liquid water to water vapour? (2 marks)
- melting
- freezing
- evaporation
- condensation
Answer: ( )
5. An object has a mass of 200g and volume of 50cm³. What is its density? (2 marks)
- 2 g/cm³
- 4 g/cm³
- 6 g/cm³
- 8 g/cm³
Answer: ( )
Section B: Short Answer Questions (15 marks)
6. Complete the table about states of matter: (3 marks)
| State | Shape | Volume | Particle Arrangement |
|---|---|---|---|
| Solid | ________ | Definite | ________ |
| Liquid | Takes container shape | ________ | Closer together, can move |
| Gas | ________ | Takes container volume | ________ |
7. Name the process for each change of state: (3 marks)
(a) Solid → Liquid: ________________
(b) Liquid → Gas: ________________
(c) Gas → Liquid: ________________
8. Look at the materials below. Classify them as transparent, translucent or opaque: (3 marks) Clear glass, frosted glass, metal sheet
(a) Clear glass: ________________
(b) Frosted glass: ________________
(c) Metal sheet: ________________
9. Calculate the density: (3 marks) A block has mass = 150g and volume = 75cm³. Find its density.
Show your working:
Answer: ________________ g/cm³
10. Explain what happens to particles when ice is heated and melts: (3 marks)
Answer: ________________________________________________
Section C: Application Questions (15 marks)
11. Water disappears from a puddle on a sunny day. Explain what happens to the water and name the process involved. (4 marks)
Answer: ________________________________________________
12. A student wants to find out which materials allow light to pass through. She has clear plastic, wooden board, and tissue paper. Predict and explain what will happen when light shines on each material. (4 marks)
Clear plastic: ___________________________________________
Wooden board: __________________________________________
Tissue paper: __________________________________________
13. Two objects have the same volume. Object A has mass 300g, Object B has mass 150g. Which object will float in water (density = 1 g/cm³)? Explain your answer. (4 marks)
Show your working:
Answer: ________________________________________________
14. Describe what you would observe when you heat an ice cube. Name the two changes of state that occur. (3 marks)
Observation: ___________________________________________
Changes of state: ______________________________________
End of Quiz
Check your answers before submitting.
Answers
P4 Science Quiz: Matter - Answer Key
Questions: 20
Time: 30 minutes
Total Marks: 40
Section A: Multiple Choice Questions (10 marks)
1. Which is NOT matter? (2 marks)
Answer: (3) shadow
Explanation: Matter is anything that has mass and takes up space. A shadow has no mass and doesn't take up space - it's just the absence of light.
2. Which state of matter has a definite shape and definite volume? (2 marks)
Answer: (1) solid
Explanation:
- Solids have definite shape and definite volume
- Liquids have definite volume but take the shape of their container
- Gases have no definite shape or volume
3. When water vapor condenses, it becomes: (2 marks)
Answer: (2) liquid water
Explanation: Condensation is the process where gas changes to liquid. Water vapor (gas) condenses to form liquid water droplets.
4. Which property helps determine if an object will float or sink? (2 marks)
Answer: (4) density
Explanation: Objects that are less dense than water will float. Objects that are more dense than water will sink.
5. What happens to the particles in water when it is heated? (2 marks)
Answer: (3) They move faster and spread apart
Explanation: When heated, particles gain energy and move faster. This causes them to spread apart more, which is why liquids expand when heated.
Section B: Short Answer Questions (15 marks)
6. Complete the table about states of matter: (6 marks)
| State | Shape | Volume | Movement of particles |
|---|---|---|---|
| Solid | Definite | Definite | Vibrate in fixed positions |
| Liquid | Takes shape of container | Definite | Move freely but stay close |
| Gas | Takes shape of container | Fills container | Move freely and spread out |
7. Name the process for each change of state: (3 marks)
(a) Solid to liquid = Melting
(b) Liquid to gas = Evaporation (or Boiling)
(c) Gas to liquid = Condensation
8. Explain why ice floats on water: (3 marks)
Answer: Ice is less dense than liquid water. When water freezes, it expands and becomes lighter per unit volume. Since ice is less dense than water, it floats on top.
9. Give two examples of each state of matter at room temperature: (3 marks)
Solids: Wood, metal, plastic, glass, rock (any 2)
Liquids: Water, milk, oil, juice, vinegar (any 2)
Gases: Air, oxygen, carbon dioxide, water vapor (any 2)
Section C: Word Problems (15 marks)
10. Siti observes that her breath becomes visible on a cold morning. (4 marks)
(a) What process is happening to the water vapor in her breath?
Answer: Condensation
(b) Explain why this happens.
Answer: The warm water vapor in her breath meets the cold air outside. The water vapor cools down and condenses into tiny water droplets that we can see.
11. Ahmad wants to test which liquids are denser than water. He has cooking oil, honey, and alcohol. (5 marks)
(a) How can he test this?
Answer: Pour each liquid into water and observe whether it floats on top or sinks to the bottom.
(b) Predict what will happen to each liquid:
- Cooking oil: Will float on top (less dense than water)
- Honey: Will sink to bottom (more dense than water)
- Alcohol: Will float/mix (less dense than water)
(c) Which liquid is the densest?
Answer: Honey
12. During a science experiment, students heat ice in a beaker. (6 marks)
(a) Describe what happens to the ice when heated.
Answer: The ice melts and changes from solid to liquid water.
(b) If heating continues, what happens next?
Answer: The water will evaporate and change from liquid to water vapor (gas).
(c) Name all the states of matter observed in this experiment.
Answer: Solid (ice), Liquid (water), Gas (water vapor)
(d) Explain what happens to the water particles during melting.
Answer: The water particles gain energy from heat and start moving faster. They break free from their fixed positions in the ice crystal and can move more freely as liquid water.
(e) Is this a reversible or irreversible change? Explain.
Answer: Reversible change. The water vapor can condense back to liquid, and liquid water can freeze back to ice. No new substance is formed.
Total Marks: 40
Grade Boundaries:
- A: 36-40 marks (90-100%)
- B: 32-35 marks (80-89%)
- C: 28-31 marks (70-79%)
- D: 24-27 marks (60-69%)
- Below 24 marks: Needs improvement
Common Mistakes to Watch For:
- Confusing melting with dissolving
- Not understanding that particles are always moving (even in solids)
- Mixing up evaporation and condensation
- Thinking that floating/sinking depends only on weight, not density
- Not recognizing that changes of state are physical changes (reversible)
- Confusing steam (invisible water vapor) with water droplets (visible)