Topic 1

Topic 1

1. Separating Mixtures

   • Filtration
     • Separating an insoluble solution from a soluble solution
     • Insoluable substance collected on filter paper
       • Warmed to evaporate any remaining solvent
   • Crystallisation
     • Heating pure substance in solution in evaporating dish
       • Stopped at the point of crystallisation
   • Distillation
     • Collecting solvent not substance
     • Solution heated until solvent evaporates
       • Solvent condensed by cooling jackets
     • Fractional Distillation
       • Separating miscible liquids
         • Collected at different boiling points
   • Paper Chromatography
     • Some compounds in a mixture dissolve better than others in a solvent
     • The more soluble the mixture, the further it is carried up the paper

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