SEPARATION TECHNIQUES FOR SEPARATING MIXTURES

Question 1

SIMPLE DISTILATION

Answer 1

Used to separate soluble solid from solution.

METHOD:

1. solution heated + water vapour rises + evaporates
2. water vapour passes through condenser where it cools
3. Turns into a liquid + then collected in beaker
4. Water evaporates from solution + solute left behind.

Question 2

FRACTIONAL DISTILATION

Answer 2

Used to separate 2 or more liquids that are miscible with one another.

METHOD:

1. solution heated at temp. of substance with lowest melting point
2. substance rises + evaporates + vapour pases through condenser
3. turns into liquid + collected in beaker
4. al of substance evaporates + collected leaving behind a mixture or substance.

Question 3

Filtration

Answer 3

Used to separate an insoluble solid from a mixture or solution

METHOD:

Question 4

CRYSTALISATION

Answer 4

Used to separate solute from solution

METHOD:

1. heat solution
2. water evaporates, leaving behind saturated solution
3. as solution cools, crystals form