Find out how advanced separation processes are used to separate substances in complex mixtures. Material processes - Separating mixtures - Other means of separation Learning Points Chromatography separates pigments in a liquid. Distillation separates liquids using their different boiling points. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.