Question

how to identify physical and chemical change please clear my confusion perfectly

Answer 1

physical change is a temporary change and chemical change is a permanent change

Answer 2

Physical change: It is temporary in nature and can be reversed.
Chemical change: It is permanent in nature and cannot be reversed.

Physical change: No new substance is formed
Chemical change: New substance is formed

Physical change: There is no change in total mass
Chemical change: Change in mass for the substances reacted but total mass is unchanged

Physical change: No release of energy
Chemical change: Release of energy such as heat and light etc.