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Take an example of burning of candle to ...

Take an example of burning of candle to explain both physical and chemical changes.

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`underset("(compound A)")(underset("Calcium Carbonate")(CaCO_(3)))+ underset("Hydrochloric acid")(2HCl(aq)) to CaCl_(2)(aq) +H_(2)O(l)+ CO_(2)(g)`
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