Question

physical change and chemical change please short point answer

Answer 1

physical change in a substance doesn't change what the substance is. In a chemical change where there is achemical reaction, a new substance is formed and energy is either given off or absorbed it is important to understand the difference between chemical and physical changes.

Answer 2

physical change...
in this change the object changes physically but any chemical changes does not occurs.
chemical change....
in this change the object changes chemically.