Lesson 5 - Distillation

Question 1

Imagine you have been marooned on a desert island. How could you make drinking water from sea water

Answer 1

A Solar Still

1. fill tank with water
2. Evaporation
3. Condensation
4. Clean water drains downward into outer trough
5. Drink

Question 2

Distillation

Answer 2

The technique used to separate a liquid from a mixture is called distillation.

Question 3

what are the 3 steps for Distillation

Answer 3

1. evaporation
2. condensation
3. collection
   The solution is heated so that the liquid evaporates and is turned into a gas. Everything else is left behind.
   The gas cools in the condenser and turns back into a liquid, which can then be collected.

Question 4

Fractional Distillation

Answer 4

Fractional distillation is the separation of a mixture into its component parts. Chemical compounds are separated by heating them into a temperature at which one or more fractions of the mixture will vaporize.

Question 5

how Fractional Distillation works

Answer 5

Air goes into the cooling unit.

The air is cooled down.

Water solidifies at 0oC and is removed.

Carbon dioxide solidifies at -79oC and is removed.

Air turns to a liquid.

Liquid air goes into the fractionating column.

Liquid oxygen is removed at the bottom of the fractionating column.

Nitrogen gas is removed from the top of the fractionating column