Physical changes like boiling do not make new materials and are easily reversed e.g. by cooling, which causes ________.
reactants
condensation
reaction
colour
A
reaction
B
colour
C
condensation
D
reactants
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Solution
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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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