Purification techniques

Question 1

to separate insoluble substances from solutions or a liquid

Answer 1

Filtration

Question 2

To recover the solute from a solution from a solution by allowing the solvent to evaporate

Answer 2

Crystallisation

Question 3

To separate the solvent from a solution (eg. pure water from salt water) or liquids with different boiling points.

Answer 3

Distillation

Question 4

If the liquids are immiscible

Answer 4

Separating funel

Question 5

An adaptation of distillation and is used for more complex mixtures.It gives better separation by using a fractioning column which has a larger temperature range from top to bottom.

Answer 5

Fractional distillation

Question 6

To remove iron from a mixture

Answer 6

using a magnet