Separation of mixtures
2 marks · NormalState one separation technique that could be used to obtain pure water from salty water, and one technique that could be used to obtain pure salt from salty water.
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Also accept: Simple distillation to obtain water, crystallisation (or evaporation) to obtain salt
Common mistakes: filtration for salt from solution
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Marking points
B1 · 1 mark · States simple distillation to obtain pure water from salty water
B2 · 1 mark · States crystallisation or evaporation to obtain pure salt from salty water
Worked solution
Pure water is obtained by simple distillation. Pure salt is obtained by crystallisation (or evaporation) of the salty water.