separating mixtures

separating mixtures

1. chromatography

   • the colours used in pens are often mixtures of more than one ink, chromatography is a way to separate the different colours tn a dye

2. sieving

   • sieving can be used to separate different sized pieces of solid, like sand and stones

3. filtration

   • a filter paper can be used as a very fine sieve, to separate an insoluble solid from a liquid - the holes in filter paper are very small to see

4. evaporation

   • when you want to get solute back from a solution you can use evaporation - the solvent is lost to the air

5. distillation

   • if you want both the solute and the solvent, you can use distillation