Melting Point
From MyMCAT
The melting point of a solid is the temperature range at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point.
Structurally Related Molecules
Trends in melting points can be determined only for structurally similar molecules, or molecules that have the same functional groups (ie R=O, CH2, R-OH, etc) in different quantities, and comparable molecular weight.
