Question

Classify the following as physical and chemical changes:
(i) Cleaning with soap and water
(ii) Cooking chicken
(iii) Formation of clouds
(iv) Making ice candy

A) Physical change - (i), (ii), (iii); chemical change - (iv)

B) Physical change - (i), (iii), (iv); chemical change - (ii)

C) Physical change - (i), (ii); chemical change - (iii), (iv)

D) Physical change - (i), (iii); chemical change - (ii), (iv)

[1 Mark]

Answer 1

Correct option: B
[1 Mark]

In a physical change, no new substance is formed and there is no change in the chemical composition of the substance whereas in a chemical change, the chemical composition of the substance changes because of formation of a new substance.
So, physical changes are:
- Cleaning with soap and water
- Formation of clouds
- Making ice candy
And, the chemical change is:
- Cooking chicken