Chapter 21- Separation techniques

Question 1

Separation techniques

Answer 1

Filtration, Chromatography, simple Distillation, crystallisation, fractional distillation, evaporation

Question 2

Filtration

Answer 2

Separating a solid and liquid with use of a filter, fluid passes through and solid remains in filter

Question 3

Crystallisation

Answer 3

Forming crystals from a saturated solution. Heating up a homogenous solution so that the liquid evaporates and crystals form.

Question 4

Solvent, Solute solution

Answer 4

Solute + Solvent = Solution
eg
Salt + water = Salt water

Question 5

Chromatography

Answer 5

Separates mixtures of dissolved substances. Usually separates dyes.
Higher solubility = Higher on the paper

Question 6

Simple Distillation

Answer 6

Separates soluble liquids from solutions
Eg
Salt water heated to b.p. in a sealed round bottom flask. water becomes a gas and then condenses in a condenser. Pure water collected out of condenser

Question 7

Fractional distillation

Answer 7

Separates liquids with different boiling points.
From lowest to highest b.p.