| A | B |
| filtration | a method of separating solid particles from a liquid by passing the liquid through a filter |
| distillation | the process of separating a liquid from a solid dissolved in it by heating it to its boiling point and then condensing the gas |
| evaporation | the process of a liquid changing into a gas (vapor) |
| condensation | the process of cooling a gas so that the gas turns into a liquid |
| *apparatus | a collection of equipment used for a particular purpose |
| chromatography | technique that uses a solvent to separate out the different solutes in a solution; e.g. for separating out the dyes found in inks |
| *pure | used to describe a substance that has only one type of particle |
| *pigment | dry coloring material, e.g. a powder to be mixed with a liquid to make paint, ink, etc. |