Separating techniques

Question 1

Crystallisation/evaporation

Answer 1

To get the solute that is dissolved in the solvent, the solvent can be evaporated leaving the solute behind.

Question 2

Filtering

Answer 2

To separate a liquid and a solid.

Question 3

Distillation

Answer 3

To separate liquids with different boiling points or a liquid and a solid.

Question 4

Basic idea of Distillation

Answer 4

Heat up a mixture of liquids with different boiling points or a mixture of a solid and liquid. A liquid boils/evaporates, goes up the tube and then down another one, which is surrounded by cold water which makes it condense. The liquid then falls into a different container.

Question 5

Basic idea of evaporation/crystallisation

Answer 5

There is a solute dissolved in a solvent. To get the solute, the solvent gets evaporated and leaves the solute behind.

Question 6

Basic idea of filtration

Answer 6

There is a piece of paper with a lot tiny gaps. Liquid gets through it but a solid won’t get through.