- A solid from a liquid = Filtration
- A solid from a solution of the solid = Evaporation
- Two liquids with different boiling points = Distillation e.g. Water and ink
- Liquids with diff. boiling points = Fractional Distillation e.g. Crude oil
- Dyes in a solution = Chromatography
- Distance travelled by dye / Distance travelled by solvent