Year 11 - Analysing Mixtures

• A mixture consists of two or more elements or compounds not chemically combined together
  • The chemical properties of each substance is not changed
  • It is possible to seperate the substances by physical methods
    • These include distillation, filtration and crystilisation
• Paper chromatography can be used to analyse substances present in solution
• Elements and compounds can be detected and identified using instrumental methods
  • These methods are accurate, sensitive and rapid.
  • They are very useful for very small samples

Gas Chromatography linked to Mass Spectroscopy (GC-MS) is an example of an instrumental method:

• GC allows the seperation of a mixture…