Chapter 3: Separation and Purification

Question 1

Collect both solid and liquid

Answer 1

Filtration

Question 2

Obtaining a soluble solid from a solution by heating the solution until all the water has boiled off

Answer 2

Evaporation

Question 3

Process to obtaining soluble solid from its solution

Answer 3

Crystallisation

Question 4

Separate a liquid from a solution

Answer 4

Simple distillation
E.g: Seawater
Salt + Water
Sugar + Water
Coloured dye + Water

Question 5

Function to Boiling chips

Answer 5

To ensure smooth boiling

Question 6

Function to thermometer

Answer 6

To ensure that we are measuring the accurate boiling point of the vapour just before it condenses

Question 7

Function to condenser

Answer 7

To condense the hot vapour to form liquid distillate

Question 8

Function to conical flask

Answer 8

To ensure that hot vapour is allowed to escape

Question 9

Function to fractionating column

Answer 9

To allow hot vapour to condense and flow back into the distillation flask

Question 10

Separate liquids mixed together

Answer 10

Fractional distillation

Question 11

Separating components that dissolve in the same solvent

Answer 11

Chromatography