GCSE Chemistry: Separating Mixtures

What is a mixture?

A combination of two or more substances that are not chemically combined

What is filtration and when is it used?

a mixture is passed through a barrier with fine pores

used to separate heterogeneous solid-liquid mixture into a filtrate (liquid) and a residue (solid)

What is evaporation and when is it used?

A process in which a dissolved solid is separated from a liquid by evaporating the liquid.

What is crystallisation?

The formation of crystals by cooling a saturated solution

What is simple distillation used for?

Separating out a liquid from a solution

What is fractional distillation used for?

To separate a mixture of miscible liquids

What is a separating funnel used for?

separate immiscible liquids

What is Chromatography?

An analytical method used to separate the substances in a mixture