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Why is burnin...

Question

Why is burning a candle an irreversible change?

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Solution

When we light a candle, the wax starts melting along with evolution of gases. We cannot get back the original candle from the melted candle. Such kind of a change in which the substance cannot be brought back into its original form is called an irreversible change. Hence, burning a candle is an irreversible change.

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Similar questions

Q. Why is the burning of a candle considered to be an irreversible change, even though we get back the wax after cooling it?

Q. Give a reason, why?

A. Freezing of water is a reversible change while burning of a candle an irreversible change.

B. Change of seasons is a periodic change while the burning of weather is a non-periodic change.

Q. Why burning of candle is a chemical change?

Q. Burning of a candle is a/an change.

Q. Look at Figure which shows three situations
(a) a burning candle
(b) an extinguished candle
(c) melting wax.
Which of these shows a reversible change and why?

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