Chapter 19- Seperating Mixtures Flashcards Preview

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Flashcards in Chapter 19- Seperating Mixtures Deck (8)
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1

Mixtures

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

2

Name the four methods of separating mixtures:

Filtration
Evaporation
Distillation
Chromatography

3

Filtration

Serpentes insoluble solid from liquid

Eg. Soil from Walter

Use filter paper in a funnel, pour solvent through

4

Evaporation

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

5

Distillation

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

6

D vantage to distillation

Both substances can be collected after the experiment

7

In distillation what is the distillate and the residue?

Distillate -the liquid that evaporates

Residue -the substance that is left in the original place

8

Chromatography

-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