Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 9 — Chapter 9: Matter (Chemistry)
Time Allowed: 32 minutes
Max Marks: 16
1. How is matter classified in chemistry? [1]
(A) Pure substances or mixtures
(B) Only solids
(C) Only liquids
(D) Only gases
2. What has fixed composition? [1]
(A) Pure substances
(B) Mixtures
(C) Neither
(D) Both equally have variable composition
3. What is an example of a physical property? [1]
(A) Colour
(B) Reactivity
(C) Chemical bonding
(D) Nothing specific
4. What is an example of a chemical property? [1]
(A) Reactivity
(B) Colour
(C) Density
(D) Size
5. What happens during a state change? [1]
(A) Particles rearrange without forming new substances
(B) New substances form
(C) Nothing happens to particles
(D) Matter disappears
6. What happens during a chemical reaction? [1]
(A) New substances form
(B) No changes occur
(C) Only colour changes with no new substance
(D) Particles disappear
7. Why study matter at the atomic level? [1]
(A) To predict how substances behave and interact
(B) No reason
(C) It's not useful
(D) Only for tests
8. Is density a physical or chemical property? [1]
(A) Physical
(B) Chemical
(C) Neither
(D) Both equally
9. How is matter classified in chemistry? [1]
(A) Pure substances or mixtures
(B) Only solids
(C) Only liquids
(D) Only gases
10. What has fixed composition? [1]
(A) Pure substances
(B) Mixtures
(C) Neither
(D) Both equally have variable composition
11. What is an example of a physical property? [1]
(A) Colour
(B) Reactivity
(C) Chemical bonding
(D) Nothing specific
12. What is an example of a chemical property? [1]
(A) Reactivity
(B) Colour
(C) Density
(D) Size
13. What happens during a state change? [1]
(A) Particles rearrange without forming new substances
(B) New substances form
(C) Nothing happens to particles
(D) Matter disappears
14. What happens during a chemical reaction? [1]
(A) New substances form
(B) No changes occur
(C) Only colour changes with no new substance
(D) Particles disappear
15. Why study matter at the atomic level? [1]
(A) To predict how substances behave and interact
(B) No reason
(C) It's not useful
(D) Only for tests
16. Is density a physical or chemical property? [1]
(A) Physical
(B) Chemical
(C) Neither
(D) Both equally