| Term | Definition |
| colloid | a mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions and that are suspended in a liquid, solid, or gas |
| concentration | the amount of a particular substance in a given quantity of a mixture, solution, or ore |
| effervescence | a bubbling of a liquid caused by the rapid escape of a gas rather than by boiling |
| electrolyte | a substance that dissolves in water to give a solution that conducts an electric current |
| enthalpy of solution | the amount of energy absorbed or released as heat when a specific amount of solute dissolves in a solvent |
| Henry's law | the law that states that at constant temperature, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas on the surface of the liquid |
| hydration | the strong affinity of water molecules for particles of dissolved or suspended substances that causes electrolytic dissociation |
| immiscible | describes two or more liquids that do not mix with each other |
| miscible | describes two or more liquids that can dissolve into each other in various proportions |
| molality | the concentration of a solution expressed in moles of solute per kilogram of solvent |
| molarity | a concentration unit of a solution expressed as moles of solute dissolved per liter of solution |
| nonelectrolyte | a liquid or solid substance or mixture that does not allow an electric current |
| saturated solution | a solution that cannot dissolve any more solute under the given conditions |
| solubility | the ability of one substance to dissolve in another at a given temperature and pressure |
| soluble | capable of dissolving in a particular solvent |
| solute | in a solution, the substance that dissolves in the solvent |
| solution | a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase |
| solution equilibrium | the physical state in which the opposing processes of dissolution and crystallization of a solute occur at equal rates |
| solvated | describes a solute molecule that is surrounded by solvent molecules |
| solvent | in a solution, the substance in which the solute dissolves |
| supersaturated solution | a solution that holds more dissolved solute than is required to reach equilibrium at a given temperature |
| suspension | a mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas |
| unsaturated solution | a solution that contains less solute than a saturated solution does and that is able to dissolve additional solute |