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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.
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Solution
- Beating of aluminium metal to make aluminium foil – physical change
- Digestion of food – chemical change
- Cutting of log of wood into pieces – physical change
- Burning of crackers – chemical change
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