1.4 Seperation methods

Question 1

Adhesion

Answer 1

The ability of a substance to stick to an adsorbent

Question 2

Adsorbent

Answer 2

Solid substance that can absorb other substances

Question 3

Adsorption

Answer 3

Separation method based on differences in adhesion
(Example: odour eaters )

Question 4

Centrifugation

Answer 4

Separation method in which a rapid rotational movement speeds the sedimentation or filtration process
(Example: centrifuging blood)

Question 5

Decanting

Answer 5

Carefully pouring off a liquid without taking any of the solid particles with it
(Example: pouring off wine)

Question 6

Distillate

Answer 6

Liquid that is collected after distillation

Question 7

Distillation

Answer 7

Separation method based on differences in boiling point
(Example: separating water and alcohol in wine by boiling it)

Question 8

Evaporation

Answer 8

Separation method based on differences in boiling point (solid and liquid). You lose your liquid!
(Example: as sea water dries up, it leaves its salt behind)

Question 9

Extraction

Answer 9

Separation method based on differences in solubility in which you dissolve substances from a mixture into the extraction agent
(Example: making tea)

Question 10

Extraction agent

Answer 10

The liquid into which a substance from a mixture can be dissolved by extraction

Question 11

Filtrate

Answer 11

The solution or liquid that has passed through the filter in a filtration process

Question 12

Filtration

Answer 12

Separation method based on differences in particle size (example: a coffee filter—> suspension or a face mask—> smoke)

Question 13

Residue

Answer 13

The part of the mixture that remains in the filter after filtration or that is left behind after distillation

Question 14

Sedimentation

Answer 14

Separation method based on differences in density (example: sedimentation tank in an aquarium)

Question 15

Separation method

Answer 15

A way of separating substances from one another

Question 16

What type of mixture does filtration have?

Answer 16

Suspension, smoke

Question 17

What type of mixture does sedimentation have?

Answer 17

Suspension, emulsion

Question 18

What type of mixture does centrufigationhave?

Answer 18

Suspension, emulsion

Question 19

What type of mixture does evaporation have?

Answer 19

Solution of a solid substance

Question 20

What type of mixture does distillation have?

Answer 20

Homogeneous liquid mixture

Question 21

What type of mixture does extraction have?

Answer 21

Any type of mixture

Question 22

What type of mixture does adsorbtion have?

Answer 22

Solutions and gas mixtures