| Term | Definition |
| mixture | a combination of two or more substances that are not chemically combined |
| solution | a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase |
| solute | in a solution, the substance that dissolves in the solvent |
| solvent | in a solution, the substance in which the solute dissolves |
| concentration | the amount of a particular substance in a given quantity of a mixture, solution, or ore |
| solubility | the ability of one substance to dissolve in another at a given temperature and pressure |
| suspension | a mixture in which particles of a material are more or less dispersed throughout a liquid or gas |
| colloid | a mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions that are suspended in a liquid, solid, or gas |