vaporization


vaporization

Conversion of a substance from the liquid or solid phase into the gaseous (see gas), or vapour, phase. It includes boiling, in which vapour bubbles form in a liquid, and sublimation, in which a solid is converted directly to vapour. Vaporization requires that heat (the substance's latent heat of vaporization) be supplied to the liquid or solid; the same amount of heat is released by the substance in condensation, the reverse of vaporization. If the surroundings do not supply enough heat, the temperature of the remaining substance undergoing vaporization drops. See also evaporation.

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