| Term | Definition |
|---|
| Decanting | Leave the suspension sit so the sediment settles to the bottom. Then pour of the liquid above the sediment. |
| Sieving | This is a useful technique for separating large chunks from a mixture. Smaller chunks will pass through. |
| Magnetic separation | Magnets are used to separate metals such as iron from a mixture. |
| Gravity separation | Mixtures containing water and particles of different weights are stirred (e.g. gold panning). Heavier particles settle to the bottom and lighter ones nearer the top. |
| Filtration | This uses a very fine sieve (filter paper) to separate out larger particles from the mixture. Dissolved particles will pass through with the solvent. |
| Evaporation and crystallisation | Solute particles are too small to be filtered, therefore, this technique involves evaporating the solvent leaving the solute behind. Example: Heating salt water to leave the salt in the ceramic bowl. |
| Distillation | This involves evaporating the solvent from the mixture, then cooling the solvent. A good way of collecting pure water. |
| Distillate | The evaporated liquid from distillation is called _______________________. |
| Chromatography | Blotting paper or filter paper can be used to separate colours from inks, textas, dyes and other colour mixtures. |
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