Burning of wax is achange and melting of wax is achange.

chemical

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mechanical

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biological

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physical

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Solution

The correct options are
A chemical
D physical
During melting, the solid wax turns into liquid wax. There is a change of state from solid to liquid, but wax still remains wax and no new substance is formed. Whereas, when wax is burnt, carbon dioxide and water vapour are released (change in state). Since new substances are formed, it is considered as a chemical change.
This shows us that change of state can be a characteristic of both physical and chemical change.

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Similar questions

Q. While burning a candle, the melting of wax is a change whereas the burning of wick is a change.

Q. Melting of wax is a/an _________ change , while burning of a candle is a/an _________ change.

Q. Melting of wax is a/an _________ change, while burning of a candle wick is a/an _________ change.

Q. Statement 1: Melting is a physical change as the melted wax can again be obtained as solid wax upon the removal of heat.
Statement 2: Burning of wax is a chemical change since the wax once burnt, cannot be returned back to its original form.
Which of the following statements is correct?

We observe that some portion of wax (in a candle) melts and another portion of it is used in producing heat and light.
Statement A: The melting of wax is a physical change
Statement B: The burning of wax for the production of heat and light is a chemical change.

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