1. Separating Mixtures

2. Separating Mixtures

3. Separating Mixtures Mixing sulphur and iron...
...how could you separate this mixture?

4. Separating Mixtures

5. Do not put magnetic directly on iron
Hold the magnet below the Petri dish
Sulphur + Iron mixture
Petri dish
Magnet

6. Separating Mixtures
You’re stranded on a desert island surrounded by sea water, sadly your science teacher is lost at sea but luckily all your science equipment has washed up...
...how could you separate a mixture of sand, salt and water to get drinking water?

7. Goal: to extract clean fresh water
Come up with a plan, you will need:
A list of equipment
A series of steps
You should be able to explain your reasoning for each step, use your science knowledge!
You have 10 minutes

8. Ideas and Changes

9. Separating Mixtures: Filtration
filter paper
Mixture (salt, sand, water)
filter funnel
Mixture (salt and water)

10. Separating Mixtures: Evaporation
Water
Evaporating dish
Mixture (salt and water)
Bunsen burner

11. Separating Mixtures: Distillation
What is happening here?
Water Vapour
Mixture (salt and water)
Bunsen burner
Water

12. Separating Mixtures – Solid and Liquid
Separate a mixture of sand, copper sulphate and water.
Filtration
Evaporation

13. Draw a diagram for filtration and evaporation
Separating Mixtures: Solids and Liquids
Filtration: method of separating an insoluble solid from a solution

14. Draw a diagram for filtration and evaporation
Separating Mixtures: Solids and Liquids
2. Evaporation: method of separating a soluble solid from a solution

15. Filtration, Evaporation and Distillation

16. Separating Mixtures - Liquids
How could we separate a mixture of water and alcohol?
Alcohol boils at 78C
Water boils at ? C
If you heated a mixture of water and alcohol which would boil first?

17. Separating Mixtures - Liquids
How could we prove we have separated the water and alcohol?

18. Separating Mixtures: Centrifuging