1. Fractional Distillation
LO: to explain how you separate mixture of solutions if they have different boiling points
Discuss and write an answer in your jotterbook
- I have salt water and I want to collect pure water to drink.
How could I do this?
Use this apparatus to help you answer the question.
Bunsen burner
Glass sheet(cold)
salt water
Tripod stand
beaker

2. Fractional Distillation
Distillation can be used to separate a mixture of 2 or more liquids if they have a different boiling points
Eg. Alcohol and water
Petroleum (crude oil)

3. Distillation demo
The liquid with the lower boiling point will boil, condense first and be collected in the tube

4. Distillation of crude oil video

5. Theory book pg 129 – 130
Then, do question 12
Ext: Discuss page 132 End of chapter question in pairs

6. Can you remember the three lab methods for separating mixtures?
filtering
chromatography
distillation
Which of these does each method do?
A separates a solvent from a solution
B separates a solid from a liquid
C separates substances with different solubility's