Methods of Separation

1. Methods of Separation Yeung tat ming 2001

2. Pure substances Classification of Matters Matters Mixtures

3. Pure substances Oxygen gas Petroleum Distilled water salt Town gas Mixtures Seawater Tin-lead solder 24 K Gold Air Bleaching solution

4. Mixture Solid/ liquid Solid/ solid Liquid/ liquid Liquid/ gas Gas/ gas Example Bleaching solution Tin-lead solder Town gas Seawater Petroleum Air Matching II

5. Salt + water Tin + lead Petrol + kerosene +... Chlorine + water Hydrogen + carbon monoxide +...

6. Solid/ liquid mixture: solution • sugar + water --> sugar solution • ______ + ______ --> solution • (solid) (liquid) • Solute + ______ --> solution • Solute + solvent --> solution

7. Sugar solution Solute: Sugar molecules Solvent: Water molecules

8. Pure substances Classification of Matters Matters Mixtures separation methods

9. Pure substances: Sugar & water Classification of Matters Matters Mixtures: Sugar solution separation methods Evaporation & Distillation

11. DECANTATION • Decantation is a quick but rough method of separating a mixture of a liquid and a much denser undissolved solid.

12. glass rod liquid solid liquid Decantation

13. FILTRATION • An insoluble solid is usually separated from a liquid by filtration.

14. glass rod mixture folded filter paper residue filter funnel filtrate stand Filtration

15. Filtration

16. A water treatment works.