The Temperature at which a substance boils, or changes from a liquid to a vapor or Gas (see States Of Matter), through the formation and rise to the surface of bubbles of vapor within
the liquid. In a stricter sense, the boiling point of a liquid is the temperature
at which its vapor Pressure is equal to the local atmospheric pressure. Decreasing (or increasing) the
pressure of the surrounding gases thus lowers (or raises) the boiling point of a
liquid. The quantity of heat necessary to change 1 g of any substance from
liquid to gas at its boiling point is known as its latent Heat of vaporization.