1. Separating Mixtures

2. How do we separate …?

3. Filtration
Chromatography
Centrifuging
Evaporating
Crystallisation
Dissolving
Decantation
Sieving
Flotation
Sedimentation

4. 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

6. Centrifuges rotate containers of
liquids to separate suspended
materials with different densities.
Centrifuges separate different components of human blood or milk and to clarify solutions. A high speed separator can rotate at great speed to separate fat (cream) from milk.
The spin drier in washing machines is a type of centrifuge that throws out the liquid by the "centrifugal force" of the rotation.

7. Centrifuging

8. Decantation

9. Evaporation changes state from a liquid to a gas
Evaporation changes state from a liquid to a gas. Evaporation occurs only from the surface of the liquid.

11. Crystallization refers to the formation of solid crystals from a homogeneous solution.  It is essentially a solid-liquid separation technique.

12. Crystal = a solid in which the atoms, molecules or ions are packed in a regular, ordered, repeated pattern.
Examples …salt, sugar, baking soda, baking powder, quartz, diamonds,

13. Copper Sulphate Crystals

14. Distillation is a method used to separate a liquid from a solution through boiling and condensation
Rose oil distillation

16. Separating funnel

17. Fractional Distillation

18. Chromatography ( colour writing) is used to separate small amounts of chemicals so that they can be analysed.
Different substances or different components move at different speeds through a strip of wet paper a gel or a gas.

19. EXTRACTING OIL FROM NUTS. 1 Place ground peanuts into a mortar
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-tube 5 Filter into an evaporating basin. 6 Warm evaporating basin for 10 minutes. 7 The solvent evaporates leaving the oil extracted from the nuts.
Solvent extraction of oil from nuts