Question

write some charecteristics of chemical and physical changes​

Answer 1

Answer:

Physical changes only change the appearance of a substance, not its chemical composition.

Chemical changes cause a substance to change into an entirely new substance with a new chemical formula.

Chemical changes are also known as chemical reactions.

Answer 2

Physical change-

A change in which no new substance are formed and which can be reversed by reversing the conditions is called a physical change.

Chemical change-

A change in which new substance are formed and which cannot be reversed by reversing the conditions is called chemical change.