Question

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

Answer 1

Answer:

Solution: Melting of wax is temporary and wax can settle again on cooling and turns into a solid. Hence, the change is only physical and the state of matter changes. Burning of the candle is permanent because once it is burnt it cannot be converted into the candle.

Answer 2

Answer:

Ok

Explanation:

Solution: Melting of wax is temporary and wax can settle again on cooling and turns into a solid. Hence, the change is only physical and the state of matter changes. Burning of the candle is permanent because once it is burnt it cannot be converted into the candle.

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