Seperating Mixtures Flashcards Preview

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Flashcards in Seperating Mixtures Deck (33):
1

Dissolved

describes a substance that has mixed completely with a liquid so that it is no longer visible. Dissolving requires the substance to separate into very small particles

2

Solution

a mixture of a solute dissolved in a solvent. Solutions are transparent but may be coloured.

3

Solute

The substance getting dissolved

4

Solvent

The substance that is doing the dissolving

5

Aqueous solutions

Solutions in which water is the solvent

6

Soluble

A substance that can be dissolved

7

Insoluble

A substance that can be dissolved

8

Chemical reaction

A chemical change in which one or more new chemical substances is produced

9

Concentrated

A solution containing a large amount of solute

10

Saturated

Unable to dissolve any more solute

11

Dilution

A process of adding more solvent to a solution to make it less concentrated

12

Fair test

A method for determining an answer to a problem without favouring any particular outcome another name for a controlled experiment

13

Pressure



A push or squeeze on an object

14

Suspension

A mixture of a gas or liquid and an insoluble substance. The insoluble substance settles to the bottom when the mixture is left to stand

15

Filtration

The process of separating suspended particles from fluid through a filter

16

Sediment

A mixture of a gas or liquid and an insoluble substance. The insoluble substance settles to the bottom when the mixture is left to stand

17

Residue

The insoluble object left on top of the liquid

18

Filtrate

A process were bacteria and items are removed from liquids

19

Centrifuging

Separating a mixture by rotating the container quickly. The heavier parts of the mixture move to the outside of the spinning container

20

Separating funnel

A pear-shaped glass container, with a tap at its base, used to separate two liquids that do not mix. Opening the tap removes the bottom liquid and the liquid floating on top is left in the funnel

21

Colloid

A mixture in which extremely small particles of one substance are spread evenly throughout another substance

22

Emulsion

A colloid with droplets of one liquid spread evenly through another

23

Decanting

Pouring liquid off the top when sediment has settled to the bottom of the container

24

Sieving

Separating particles of different sizes by allowing the smaller particles to fall through holes in a container

25

Separating funnel

A pear-shaped glass container, with a tap at its base, used to separate two liquids that do not mix. Opening the tap removes the bottom liquid and the liquid floating on top is left in the funnel

26

Centrifuging

Separating a mixture by rotating the container quickly. The heavier parts of the mixture move to the outside of the spinning container

27

Distillation

A separation technique that uses evaporation to separate substances. The mixture is heated so that one substance evaporates the vapour is collected and condenses into a liquid

28

Water condenser

A glass device for cooling a gas to form a liquid. It is a tube within a tube the gas flows through the inner tube while water moves through the surrounding outer tube to cool the gas

29

Distillate

The liquid collected during distillation when the evaporated substance condenses

30

Distilled water

Pure water from a condensing steam

31

Crystallisation

A separation technique that uses evaporation to separate the parts of a solution The solvent evaporates and leaves behind the solute as crystals

32

Osmosis

The process of separating using a membrane through which one constituent cannot pass

33

Paper chromatography

Method of separating a mixture of different colours the liquid soaks through the paper and carries the mixture with it some substances are carried faster than others so the substances are separated along the paper