Question

what are physical changes and chemical changes???​

Answer 1

the changes which are reversible are called physical changes for example melting of ice, melting of wax.

nut changes which are irreversible or written this are called chemical changes for example conversion of milk into curd, burning of wood into ash.

Answer 2

Hey mate here you go...

Physical changes:- Materials that can be reversed. No new substance is formed.

Chemical changes :-Materials which cannot be reversed . And a new substance is formed.

Hope it helps

Thank you