Fitlration, Evaporation, Chromatography and Distillation
Fitlration, Evaporation, Chromatography and Distillation
Filtration
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Filtration is a separation method typically used to remove solid particles from a liquid or gas.
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This process uses a philtre, which traps the solid but allows the liquid or gas to pass through.
Evaporation
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Evaporation is a separation method usually employed to separate a solvent from a solution.
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The solution is heated causing the solvent to evaporate, leaving behind the solid solute.
Chromatography
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Chromatography is a method for separating mixed substances, often colour substances, based on their different affinities for the mobile phase and stationary phase.
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Each substance moves at a different rate, facilitating their separation.
Distillation
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Distillation is a separation method utilised to separate liquids in a mixture with different boiling points.
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The mixture is heated, the substance with the lower boiling point evaporates first and is then cooled and condensed into a separate container.
Key terms to remember
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Filter: A tool used to separate solid particles from a liquid or gas in filtration.
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Evaporation: A method to separate a solvent from a solution by heating the solution and allowing the solvent to turn into gas and evaporate.
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Chromatography: A method to separate mixtures based on their different moving speeds through a medium.
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Distillation: A separation process for a mixture of liquids or a liquid from a solution, based on their different boiling points.
Further notes
- Experiment safety: Always remember safety in the lab when performing separation techniques. Use Bunsen burners and heated solutions carefully and always wear protective gear.