Question

Classify the following processes into physical or chemical changes:

1. Beating of aluminium metal to make aluminium foil.
2. Digestion of food.
3. Cutting of a log of wood into pieces.
4. Burning of crackers.

Answer 1

1. Beating of aluminium metal to make aluminium foil – physical change
2. Digestion of food – chemical change
3. Cutting of log of wood into pieces – physical change
4. Burning of crackers – chemical change