Question

Physical changes like boiling do not make new materials and are easily reversed e.g. by cooling, which causes ________.

A

condensation

B

reactants

C

reaction

D

colour

Easy

Solution

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Correct option is A)

Condensation: The change of a gas or vapor to a liquid, either by cooling or by being subjected to increased pressure. When water vapor cools in the atmosphere, for example, it condenses into tiny drops of water, which form clouds. 

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