Science 4 · Unit 3: Materials · Cambridge Primary Science Stage 4
3.1 Materials, substances and particles
18 questions · e.g. Why does a solid have a fixed shape?
Questions
1. Solid or liquid? It has no fixed shape and can flow.
Check2. Solid or liquid? It has a fixed shape and cannot be squashed.
Check3. Solid or liquid? Its particles move very little.
Check4. Solid or liquid? Its particles move around each other.
Check5. Solid or liquid? Its particles are quite close together.
Check6. Solid or liquid? Its particles are very close together.
Check7. Ten particles are drawn in a box to show a solid. How should they look?
- touching each other, in neat rows
- close together but jumbled
- spread far apart
- in one long line with gaps
8. All substances are made of tiny ...
Check9. Complete the sentence: Solids have a fixed shape because their particles are packed ...
Check10. Complete the sentence: The particles in a solid ... in a fixed position.
Check11. Liquids can spread out and take on the shape of their ...
Check12. Look at the drawing. Which state of matter does it show?
Check13. Look at the drawing. Which state of matter does it show?
Check14. Look at the drawing of a solid. Which sentence describes its particles?
- They are packed tightly in fixed positions and only shake.
- They are close together and slide past each other.
- They are far apart and move quickly in all directions.
- They do not move at all.
15. Look at the drawing of a liquid. Which sentence describes its particles?
- They are close together but can move around each other.
- They are packed in neat rows and only shake.
- They are far apart and never touch.
- They do not move at all.
16. True or false: The particles in a solid do not move at all.
Check17. Solids have a fixed shape because ...
- their particles do not move very much.
- their particles can move around each other.
- their particles move quickly in all directions.
- they have no particles.
18. Liquids can change shape because ...
- their particles can move around each other.
- their particles do not move very much.
- their particles are in neat rows.
- they have no particles.