Separating Mixtures. How do we separate …?. Filtration Chromatography Centrifuging Evaporating Crystallisation Dissolving Decantation Sieving Flotation Sedimentation.
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Filtration - The process whereby fluids pass through a filter or a filtering medium. A process like sieving, where large particles are caught on filter paper, whilst solutions pass through
Evaporationchanges state from a liquid to a gas. Evaporation occurs only from the surface of the liquid.
Crystallization refers to the formation of solid crystals from a homogeneous solution. It is essentially a solid-liquid separation technique.
Examples …salt, sugar, baking soda, baking powder, quartz, diamonds,
Distillation is a method used to separate a liquid from a solution through boiling and condensation
Rose oil distillation
Chromatography ( colour writing) is used to separate small amounts of chemicals so that they can be analysed.
EXTRACTING OIL FROM NUTS.1 Place ground peanuts into a mortar. 2 Add 20 mL of methylated spirits. 3 Thoroughly grind nuts in solvent. 4 Pour liquid into a test-tube5 Filter into an evaporating basin. 6 Warm evaporating basin for 10 minutes. 7 The solvent evaporates leaving the oil extracted from the nuts.