The substance present in a smaller amount in a solution. Solubility - the quantity of solute that will dissolve in a given amount of solvent at a given temperature. Miscibility - ability to mix in all proportions. Insoluble - a term applied to a solute when it will not dissolve in a given solvent. Gas solubility - Lower temperature causes more gas to dissolve in a given volume of liquid.
Solids are difficult to compress because the particles are very close together.
Melting point - the temperature at which the energy to overcome the attraction between the particles in a solid lattice.