Science, asked by reenamaan076107107, 7 months ago

a. a _ change occurs only in one direction.
b. materials on heating undergo_

please answer both​

Answers

Answered by vishalaluminium4290
21

Answer:

A  Burning of a candle is an irreversible change that proceeds only in one direction

B   Some substances undergo even more drastic changes and we will now consider ... After the first visible change, stop heating and allow the material to cool.

Explanation:

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