Difference between revisions of "Chromatography"
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===About Chromatography=== | ===About Chromatography=== | ||
− | '''Chromatography''' | + | '''Chromatography''' can be used for: |
*[[Separating Mixtures|Separating]] and identifying two or more [[solute]]s from a [[solution]]. | *[[Separating Mixtures|Separating]] and identifying two or more [[solute]]s from a [[solution]]. | ||
+ | *Identifying [[pure]] from [[impure]] [[substance]]s. | ||
'''Chromatography''' cannot be used for: | '''Chromatography''' cannot be used for: | ||
*[[Separating Mixtures|Separating]] separating [[liquid]]s in [[solution]] - [[Fractional Distillation]] | *[[Separating Mixtures|Separating]] separating [[liquid]]s in [[solution]] - [[Fractional Distillation]] | ||
*[[Separating Mixtures|Separating]] an [[insoluble]] [[solid]] from a [[soluble]] [[solid]] - [[Filtration]] | *[[Separating Mixtures|Separating]] an [[insoluble]] [[solid]] from a [[soluble]] [[solid]] - [[Filtration]] | ||
*[[Separating Mixtures|Separating]] [[solute]]s from a [[solvent]] in [[solution]]. - [[Evaporation of Solutions|Evaporation (Crystallisation)]] or [[Distillation]]. | *[[Separating Mixtures|Separating]] [[solute]]s from a [[solvent]] in [[solution]]. - [[Evaporation of Solutions|Evaporation (Crystallisation)]] or [[Distillation]]. | ||
+ | |||
+ | : [[Chromatography]] relies on |
Revision as of 12:01, 22 January 2019
Contents
Key Stage 3
Meaning
Chromatography is a method used to separate and identify different solutes found in a solution.
About Chromatography
- When more than one solute is dissolved in a solvent chromatography can be used to separate them.
- Chromatography experiments are often done with colourful solutes which can be seen easily.
This diagram shows how black ink is made of three different inks in solution. |
Method
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Key Stage 4
Meaning
Chromatography is a technique used to separate and identify different solutes found in a solution.
About Chromatography
Chromatography can be used for:
- Separating and identifying two or more solutes from a solution.
- Identifying pure from impure substances.
Chromatography cannot be used for:
- Separating separating liquids in solution - Fractional Distillation
- Separating an insoluble solid from a soluble solid - Filtration
- Separating solutes from a solvent in solution. - Evaporation (Crystallisation) or Distillation.
- Chromatography relies on