Experimental techniques and chemical analysis

Question 1

What are the 4 methods of seperation?

Answer 1

Filtration
Crystallisation
Simple distillation
Fractional distillation

Question 2

Define filtration

Answer 2

Used for insoluble substances in a liquid

Question 3

Define residue

Answer 3

Thing that stays behind after filtration

Question 4

Define filtrate

Answer 4

Liquid that passes through the funnel during filtration

Question 5

Define crystallisation

Answer 5

Used to seperate a dissolved solid from a solution; when the solid is much more soluble in hot solvent than in cold solvent

Question 6

Define simple distillation

Answer 6

Used to seperate a dissolved solid from a liquid

Mixture is heated until boiling point is reached
Liquid to Gas
Gas passes through condenser
Liquid is collected

Question 7

Define fractional distillation

Answer 7

Used to seperate liquids with different boiling points

The liquid with the lowest boiling point is collected first
Makes use of fractionating column and condenser