ICSE Class 6 Chemistry - Matter - Test 4 (Expert)
1. A rubber bulb is squeezed under water and bubbles come out. What do the bubbles show?
A. Water has no volume
B. Air occupies space
C. Rubber is a liquid
2. A dry sponge becomes smaller when pressed. This is mainly because it contains:
A. Only stone particles
B. No matter
C. Tiny air spaces
3. A steel spoon keeps its shape even when placed in different containers. This is because it is a:
A. Solid
B. Liquid
C. Gas
4. A liquid is poured into a slanting container. Which statement is correct?
A. It keeps its own fixed shape
B. It takes the shape of the container
C. It becomes a solid at once
5. A small amount of air is trapped inside a big jar. After some time, where will the air be?
A. Only at the bottom
B. Only near the lid
C. Throughout the jar
6. A candle kept near a flame starts becoming soft and liquid. This change is called:
A. Melting
B. Freezing
C. Condensation
7. A mirror becomes misty after hot steam touches it. This is due to:
A. Melting
B. Condensation
C. Freezing
8. Water kept in a shallow plate disappears faster than water kept in a narrow glass because:
A. Glass changes water into ice
B. Water becomes sand
C. More surface area helps evaporation
9. Why does water become ice in a freezer?
A. Heat is removed from water
B. Water gains more heat
C. Water changes into air
10. A liquid is moved from a round bowl to a square box. What remains unchanged?
A. Shape of the liquid
B. Volume of the liquid
C. Shape of the box
11. Which statement is true for most solids?
A. They fill the whole room
B. They have no definite volume
C. They have definite shape and volume
12. Which property makes gases different from solids and liquids?
A. Gases have no fixed volume
B. Gases are always hard
C. Gases cannot move
13. Water vapour changes into liquid water on cooling because its particles:
A. Move faster and farther apart
B. Slow down and come closer
C. Disappear completely
14. A smell from an opened bottle reaches a person standing far away. What is the best reason?
A. The smell becomes a solid
B. The bottle pulls the air back
C. Gas particles move and spread
15. Ice melts into water. Which statement is correct?
A. Only the state changes
B. Water changes into metal
C. Matter disappears
16. Why can air in a football be compressed slightly?
A. Air has no particles
B. Air particles have spaces between them
C. Air is a hard solid
17. Which observation shows that liquid particles can move around each other?
A. A brick keeps its shape
B. A balloon keeps expanding forever
C. Water flows down a slope
18. A balloon is fixed on the mouth of a bottle. When the bottle is warmed, the balloon expands. This shows that heating makes air:
A. Expand
B. Freeze
C. Become a solid
19. Which pair correctly shows melting?
A. Water vapour to water
B. Ice to water
C. Water to ice
20. A large box can hold more books than a small box because it has greater:
A. Colour
B. Smell
C. Volume