IGCSE›Oxford AQA IGCSE Chemistry›Mind mapsSeparating MixturesOxford AQA IGCSE Chemistry: Mind mapStudy pack PDFAlso for this subtopic:Revision notesFlashcardsSubtopic testCover factsWhat is a mixture?Two or more substances not chemically combinedEach keeps its own propertiesSeparated by physical methodsFiltrationSeparates insoluble solid from liquidLiquid passing through is the filtrateSolid trapped on the paper is the residueExample: sand from waterCrystallisationGets a solid solute from its solutionHeat gently to make a saturated solutionCool → crystals formFilter out the crystals and dry themSeparatingmixturesDistillationUses different boiling pointsLower boiling point evaporates firstVapour condenses in the condenserGives pure solvent from a solutionSeparates miscible liquidsChoosingInsoluble solid + liquid → filtrationWant the dissolved solid → crystallisationWant the pure solvent → distillationExam tipsJustify with a property differenceA named method alone rarely earns full marks