Question

Classify the following processes into physical or chemical changes:
Beating of aluminium metal to make aluminium foil.
Digestion of food.
Cutting of a log of wood into pieces.
Burning of crackers.

Answer 1

beating of aluminium metal to make aluminium sheet is physical change

digestion of food is chemical change

cutting of Log of wood into pieces is physical change

burning of cracker is chemical change

Answer 2

Physical changes are those that alter a material 's shape, while chemical changes are those that change the entire material with a fresh chemical composition.

• The said changes are -
• Beating of aluminium metal to make aluminium foil.- Physical Change
• Digestion of food.  - Chemical Change - Chemical Change
• Cutting of a log of wood into pieces.  - Physical Change
• Burning of cracker - Chemical change