Question

physical change and chemical change​

Answer 1

when an element changes its States is known as its physical changes

when an element changes its colour or any other chemical changes in it is known as chemical change

Answer 2

Explanation:

physical change

physical change are those change which can not impact on chemical composition and moleculer structure of subtance.

the subtance regain its properties after reaction.

chemical change

chemical change are those change which change chemical composition and moleculer structure at reaction. After reaction a new substance formed.