Question

state two difference between




physical and chemical change

Answer 1

the changes which can be changed from one form to another (reversible)are called physical changes.e.g. melting of ice
chemical changes are those changes that are irreversible and cannot be changed from one form to another.e.g. cooking of vegetables.

Answer 2

Answer:

PHYSICAL CHANGES

- The chemical composition of a substance does not change.

- Change is only in the state of matter and not in the chemical identity.

-Examples include- Vaporising of water and dissolution of sugar in water.

CHEMICAL CHANGES

- The chemical composition of a substance changes.

- Change is in chemical identity, but may or may not be in the state of matter.

- Examples include- Rusting of Iron, cooking of food etc.