Chapter 19- Seperating Mixtures

Question 1

Mixtures

Answer 1

When two or mode substances are mingled together but not chemically combined

Question 2

Name the four methods of separating mixtures:

Answer 2

Filtration
Evaporation
Distillation
Chromatography

Question 3

Filtration

Answer 3

Serpentes insoluble solid from liquid

Eg. Soil from Walter

Use filter paper in a funnel, pour solvent through

Question 4

Evaporation

Answer 4

Separates soluble solid from liquid
Eg. NaCh and H20
Heat solution until solvent evaporates, solute will be left on dish

Question 5

Distillation

Answer 5

Two miscible liquids/soluble solid and solvent
Eg. Alcohol and water/ NaCh and H2O
Water and alcohol mixture heated to 80* (alcohol boils at 78*)
School evaporates and then condenses

Question 6

D vantage to distillation

Answer 6

Both substances can be collected after the experiment

Question 7

In distillation what is the distillate and the residue?

Answer 7

Distillate -the liquid that evaporates

Residue -the substance that is left in the original place

Question 8

Chromatography

Answer 8

-marker dot on chromatography paper
-water goes up paper, carries ink
-colours in ink will have different levels of solubility
-low solubility= low level on chromatography paper
Vice versa