Which phase change occurs when a liquid becomes a gas?

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Multiple Choice

Which phase change occurs when a liquid becomes a gas?

Explanation:
When a liquid becomes a gas, energy is put into the liquid so its molecules can overcome the attractions holding them together and spread out into the air. This change is evaporation (also called vaporization). It can happen at any temperature, especially at the surface where faster-moving molecules escape into the gas phase; heating makes it happen faster. This is different from condensation, which is gas turning back into liquid, and from melting (solid to liquid) or freezing (liquid to solid).

When a liquid becomes a gas, energy is put into the liquid so its molecules can overcome the attractions holding them together and spread out into the air. This change is evaporation (also called vaporization). It can happen at any temperature, especially at the surface where faster-moving molecules escape into the gas phase; heating makes it happen faster. This is different from condensation, which is gas turning back into liquid, and from melting (solid to liquid) or freezing (liquid to solid).

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