Melting point - The temperature at which a solid becomes a liquid, Boiling point - The temperature at which the vapour pressure of a liquid equals atmospheric pressure, Evaporation - Molecules of vapour leaving the surface of a liquid, Boiling - Bubbles of gas forming inside a liquid and escaping from the surface, Freezing point - The temperature at which a liquid turns into a solid, Condensation - The change from a gas into a liquid - the reverse of vaporization, Heat of fusion - The energy required to change a substance from solid to liquid at its melting point, Heat of vaporization - The amount of energy required for a liquid at its boiling point to become a gas, Sublimation - A solid vaporizing into a gas, Deposition - A gas changing into a solid,

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