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7E Mixtures and Sep
Key words
Term | Definition |
---|---|
Dissolve | When a substance mixes in with the solution |
Filtrate | The liquid that passes through the filter |
Mixture | Two or more substances mixed together but not bonded |
Suspension | A mixture where the heavier portion will separate out when left to stand |
Colloid | A mixture where the substances do not separate out when left to stand |
Disperse | To spread out |
Opaque | Light does not pass through |
Transparent | Clear. Light can pass through. May be coloured or colourless. |
Filter | Removing large solid or suspended particles from a liquid |
Sieve | A mesh or grid to separate solids according to size |
Solvent | The liquid in a solution |
Solute | The substance dissolved in solution (can be solid, liquid or gas) |
Solution | A mixture of solvent and solute |
Solubility | The amount of solute that can dissolve in a solvent |
Soluble | A substance that can dissolve |
Insoluble | A substance that cannot dissolve |
Evaporate | To change from liquid to gaseous state below the boiling point |
Heating to dryness | Removing from heat allowing the remaining liquid to evaporate to prevent spitting |
Boiling | To change from liquid to gaseous state at the boiling point |
Chromatography | To separate a substance based on how well in is carried by a solvent through a substance |
Desalination | To remove water from salt |
Distillation | To separate a liquid from a mixture by boiling and condensation |
Steam | Water vapour |
Condense | To change from the gaseous to the liquid state |
Still | Apparatus for distillation |