Methods of Separation Yeung tat ming 2001
Classification of Matters Pure substances Mixtures Matters
Pure substances Mixtures Air Oxygen gas 24 K Gold Distilled water Bleaching solution Town gas Seawater Tin-lead solder Petroleum salt
Matching II Mixture Solid/ liquid Solid/ solid Liquid/ liquid Liquid/ gas Gas/ gas Example Bleaching solution Tin-lead solder Town gas Seawater Petroleum Air
Salt + water Tin + lead Petrol + kerosene +... Chlorine + water Hydrogen + carbon monoxide +...
Solid/ liquid mixture: solution sugar + water --> sugar solution ______ + ______ --> solution (solid) (liquid) Solute + ______ --> solution Solute + solvent --> solution
Sugar solution Solvent: Water molecules Solute: Sugar molecules
Classification of Matters Pure substances Mixtures Matters separation methods
Classification of Matters Pure substances: Sugar & water Mixtures: Sugar solution Matters separation methods Evaporation & Distillation
DECANTATION Decantation is a quick but rough method of separating a mixture of a liquid and a much denser undissolved solid.
liquid solid liquid glass rod Decantation
FILTRATION An insoluble solid is usually separated from a liquid by filtration.
Filtration glass rod mixture folded filter paper residue filter funnel filtrate stand
Filtration
A water treatment works.