Question

Melting of wax is a physical change but the burning of a candle is chemical because:​

Answer 1

The melting of wax is a physical change. While melting a wax, wax changes from a solid to a liquid state. It is a reversible reaction and also no new substances are formed. But, the burning of wax is a chemical change. While burning wax, new gaseous substances are formed and hence it is a chemical change.

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Answer 2

Answer:

While melting a wax, wax changes from a solid to a liquid state. It is a reversible reaction and also no new substances are formed. But, the burning of wax is a chemical change. While burning wax, new gaseous substances are formed and hence it is a chemical change.