Question

Give three reasons why melting of wax is considered a physical change while burning of a candle a chemical change

Answer 1

Melting of wax is a physical change because no new substance is formed.

It can be reversed.

It's property is similar to the original property.

Whereas burning if candle is a chemical energy it can't be reversed or it is irreversible, it's new property is different from original propery and new substance is formed.

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