Question Paper
Class / Subject: Class 7 (ICSE) · Science
Chapter: Chapter 9 — Chapter 9: Physical and Chemical Changes
Time Allowed: 32 minutes
Max Marks: 16
1. What is a physical change? [1]
(A) A change in form without changing composition
(B) A change creating a new substance
(C) No change at all
(D) Only a colour change
2. What is an example of a physical change? [1]
(A) Melting ice
(B) Burning wood
(C) Rusting iron
(D) Cooking an egg
3. What is a chemical change? [1]
(A) A change creating a new substance
(B) A change in form only
(C) No change at all
(D) Only a size change
4. What is an example of a chemical change? [1]
(A) Cooking an egg
(B) Melting ice
(C) Cutting paper
(D) Freezing water
5. What is a sign of a chemical change? [1]
(A) Gas production
(B) No signs exist
(C) Only size change
(D) Only weight change
6. What is a precipitate? [1]
(A) A solid formed from a chemical reaction in liquid
(B) A type of gas
(C) A type of physical change
(D) Nothing specific
7. Can a physical change usually be reversed? [1]
(A) Often, yes
(B) Never
(C) Always chemically
(D) It's the same as chemical change
8. Why distinguish these changes? [1]
(A) To understand and predict substance behaviour
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is a physical change? [1]
(A) A change in form without changing composition
(B) A change creating a new substance
(C) No change at all
(D) Only a colour change
10. What is an example of a physical change? [1]
(A) Melting ice
(B) Burning wood
(C) Rusting iron
(D) Cooking an egg
11. What is a chemical change? [1]
(A) A change creating a new substance
(B) A change in form only
(C) No change at all
(D) Only a size change
12. What is an example of a chemical change? [1]
(A) Cooking an egg
(B) Melting ice
(C) Cutting paper
(D) Freezing water
13. What is a sign of a chemical change? [1]
(A) Gas production
(B) No signs exist
(C) Only size change
(D) Only weight change
14. What is a precipitate? [1]
(A) A solid formed from a chemical reaction in liquid
(B) A type of gas
(C) A type of physical change
(D) Nothing specific
15. Can a physical change usually be reversed? [1]
(A) Often, yes
(B) Never
(C) Always chemically
(D) It's the same as chemical change
16. Why distinguish these changes? [1]
(A) To understand and predict substance behaviour
(B) No reason
(C) It's not useful
(D) Only for tests