Question

what is the difference between physical change and chemical change

Answer 1

A change in which substance does not change is known as Physical change.It is otherwise known as reversable change.
A change in which a new substances are obtained is known as chemical change.It is irreversible.Eg: burning of paper

Answer 2

In a physical change there's a change in the physical composition, whereas in chemical change there is change in the chemical composition as well as the physical sometimes.