Question

Are the changes physical or chemical?
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Answer 1

Answer:

1. Physical change:- To get crystals from solution of common salt, to make magnet from iron, conversation of copper sulphate,galvanisation , to colour iron
2. Chemical change:- rusting of iron,to explore firecrackers, photosynthesis, digestion of food, mixing of magnesium oxide with water, Neutralisation reaction.

Answer 2

Explanation:

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