Separating Mixtures
Chemical reactions are the only way to separate compounds. Mixtures however can be separated by physical processes. These include: Filtration, Crystallisation, Distillation and Chromatography.
How different mixtures can be separated
Filtration
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Filtration is used for separating insoluble solids from liquids, e.g. sand and water.
Crystallisation
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Crystallisation is used to separate solids from solutions, e.g. obtaining salt from salty water.
Simple distillation
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Simple distillation is used to separate a liquid from a solution, e.g. water from salty water.
Fractional distillation
Fractional distillation is used to separate liquids that have different boiling points, e.g. ethanol and water.
Chromatography
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Chromatography used to separate dyes, e.g. the different components of ink.
The video below explains how mixtures can be separated.
