Separation Techniques

QUIZ Questions

Which technique can be used to separate 2 liquids with different boiling points?

Distillation

1

Which liquid, water or alcohol, has a lower boiling point (and boils first)?

Alcohol

2

Which technique separates substances based on how well they dissolve in a particular solvent?

Chromatography

3

In felt-tip pen chromatography which colour of pen was actually a mixture of the MOST colours of ink?

Black

4

In the diagram below which spot was most soluble (i.e. dissolved best) in the solvent?

Spot A

5

x

Spot A

Spot B

Spot C

x

Spot A

Spot B

Spot C

In chromatography of biro pen ink which solvent was best to carry the ink up the paper?

Meths

6

What do we call a substance that cannot dissolve in a solvent?

Insoluble

7

Which technique can be used to separate an insoluble solid from a liquid?

Filtration

8

Which technique can be used to separate a soluble solid from the liquid it is dissolved in?

Evaporation

9

Put the following 6 steps for separating sand and salt into the correct order

A Heat filtrate to evaporate off the solvent (water)

10

C Filter to remove the insoluble sand

B Pour salt water filtrate into an evaporating basin

on a tripod over a Bunsen burner

D Place the sand/salt mixture into a beaker and

add waterE Allow basin to cool & collect salt

F Stir to allow the salt to dissolve in the water

D F C B A E