II. State whether the following are physical or chemical changes.
(6 marks)
1) Boiling of an egg
2) Photosynthesis
3) Burning of fuel
4) Firework goes off
5) Melting of wax
6) Copper roof turning green
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Answer:
1. chemical change
2. chemical change
3. chemical change
4. chemical change
5. physical change
6. chemical change
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