Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 10 — Chapter 10: Physical and Chemical Changes
Time Allowed: 32 minutes
Max Marks: 16
1. What is a physical change? [1]
(A) A change without new substances forming
(B) A change creating new substances
(C) No change at all
(D) Only a size change
2. What is an example of a physical change? [1]
(A) Dissolving sugar in water
(B) Burning wood
(C) Rusting iron
(D) Fermentation
3. What is a chemical change? [1]
(A) A change creating new substances
(B) A change in form only
(C) No change at all
(D) Only a colour change
4. What is an example of a chemical change? [1]
(A) Fermentation
(B) Cutting paper
(C) Dissolving salt
(D) Melting ice
5. Are physical changes usually reversible? [1]
(A) Yes, often
(B) No, never
(C) Chemical changes are more reversible
(D) Reversibility doesn't apply
6. Are chemical changes usually reversible? [1]
(A) No, usually not
(B) Yes, always
(C) Physical changes are less reversible
(D) Reversibility doesn't apply
7. What is a sign of chemical change? [1]
(A) Gas formation
(B) No signs exist
(C) Only size change
(D) Only weight change
8. Why distinguish these changes? [1]
(A) Fundamental to understanding chemical reactions
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is a physical change? [1]
(A) A change without new substances forming
(B) A change creating new substances
(C) No change at all
(D) Only a size change
10. What is an example of a physical change? [1]
(A) Dissolving sugar in water
(B) Burning wood
(C) Rusting iron
(D) Fermentation
11. What is a chemical change? [1]
(A) A change creating new substances
(B) A change in form only
(C) No change at all
(D) Only a colour change
12. What is an example of a chemical change? [1]
(A) Fermentation
(B) Cutting paper
(C) Dissolving salt
(D) Melting ice
13. Are physical changes usually reversible? [1]
(A) Yes, often
(B) No, never
(C) Chemical changes are more reversible
(D) Reversibility doesn't apply
14. Are chemical changes usually reversible? [1]
(A) No, usually not
(B) Yes, always
(C) Physical changes are less reversible
(D) Reversibility doesn't apply
15. What is a sign of chemical change? [1]
(A) Gas formation
(B) No signs exist
(C) Only size change
(D) Only weight change
16. Why distinguish these changes? [1]
(A) Fundamental to understanding chemical reactions
(B) No reason
(C) It's not useful
(D) Only for tests