Question

Identify physical changes and chemical 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 substance with a new chemical formula. Chemical changes are also known as chemical reactions.

Answer 2

Answer:

1. in physical changes no new substance is not form and it is a reversible process
2. in chemical changes new substance is form and it is irreversible process