As substance state changes, one mole loses or gains heat {latent heat}|. Latent heat changes molecular conformation and depends on substance type. Total heat Q needed to change state depends on substance mass m and latent heat L: Q = m*L. For liquid-to-gas state change, one mole of liquid gains heat {heat of vaporization} {vaporization heat}. For solid-to-liquid state change, one mole of solid gains heat {heat of fusion} {fusion heat}.
Physical Sciences>Physics>Heat>Phase
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224