Question

justify the statement burning of candle both physical and chemical change

Answer 1

When the candle burns the wax melts and drips.. This later becomes solid by cooling
This is a reversible physical change
The burning of the wax vapour is a chemical change.
No new substance is formed.
Thus candle burning supports both type of changes

Answer 2

Hey, here is your answer -

If a candle is lit,the wax melts and turns into liquid state. As some of the molten wax drops on the floor or the table, it solidifies again. Therefore, this is a physical change.

Simultaneously, most of the molten wax rises up the wick, turns into vapour and burns with a great flame. Two substances are formed - carbon dioxide and water vapour. The candle becomes smaller and smaller. Therefore, this is a chemical change.

Thus, we see that melting of wax is a physical change and burning of the candle is a chemical change.

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