Question

write any three difference between chemical and physical change​

Answer 1

ANSWER :-

Physical Change

Chemical Change

1. The chemical composition of a substance does not change.

1. The chemical composition of a substance changes.

2. Most changes are reversible.

2. Most changes are irreversible.

3. No new substances are formed. For example,

Ice → Water → Steam

3. New substances are formed.For example,

Paper → Ashes

Answer 2

ANSWER

Physical change

• Physical change(i) No new product is formed.

• Physical change(i) No new product is formed.(ii) It is a temporary change.

• Physical change(i) No new product is formed.(ii) It is a temporary change.(iii) The mass of substance does not alter in this change.

Chemical change

• Chemical change(i) New products are formed.

• Chemical change(i) New products are formed.(ii) It is a permanent change

• (iii) The mass of substance does alter in this change.