Crystallisation (evaporation)

Evaporation is when a liquid is heated and changes state into a gas.

When a solution is heated, some of the solvent evaporates, leaving behind a saturated solution – one in which no more solid can dissolve at that temperature. The saturated solution is allowed to cool and crystals to form. The crystals can be separated out by filtration. This process is known as crystallisation.

A solution is placed in an evaporating basin and heated with a Bunsen burner

A solution is placed in an evaporating basin and heated with a Bunsen burner.