Question

Define physical change. Give example.

Answer 1

Physical change: Physical change is a temporary change in which chemical composition of the substance does not change and no new substance is formed.

During a physical change, only the physical properties of a substance change.
It is a reversible change. For example, melting of ice, during this change, the water changes from its solid form to liquid form. It can be solidified again.The water remains water in both the cases.