Chemistry Unit 4

Question 1

colloid

Answer 1

where the particles of one substance don’t dissolve but stay distributed through another substance

Question 2

concentrated

Answer 2

a solution with a large amount of solute

Question 3

decantation

Answer 3

the process of separating by using gravity

Question 4

dilute

Answer 4

a solution with only a small amount of solute

Question 5

emulsion

Answer 5

two or more liquids trying to separate

Question 6

evaporation

Answer 6

when heat causes liquid to become gas

Question 7

filtrate

Answer 7

the substance that passes through the filter

Question 8

filtration

Answer 8

separating a mixture by passing through a filter

Question 9

flocculent

Answer 9

a substance that causes particles to clump

Question 10

flotation

Answer 10

separating a mixture based on its capacity to float

Question 11

heterogeneous mixture

Answer 11

a mixture that can be easily separated into its parts

Question 12

homogeneous mixture

Answer 12

a mixture where components are evenly distributed

Question 13

insoluble

Answer 13

substances that cannot dissolve

Question 14

mixture

Answer 14

a substance made up of two or more different substances

Question 15

pure substance

Answer 15

a substance that is just made up of one particle

Question 16

residue

Answer 16

the substance that is left in the filter

Question 17

saturated

Answer 17

a solution with the maximum amount of solute dissolved

Question 18

soluble

Answer 18

substances that can dissolve

Question 19

solution

Answer 19

a mixture where one substance is evenly dissolved in another

Question 20

solvent

Answer 20

a solution capable of dissolving another substance

Question 21

suspension

Answer 21

a mixture where one substance will eventually settle out of the solvent

Question 22

aqueous solution

Answer 22

solutions where the solvent is water

Question 23

centrifugue

Answer 23

a device that uses speed to separate substances based on mass (blood spinning in the thing)

Question 24

chromotography

Answer 24

a technique used to separate substances based on movement at different rates due to solubility (texter on paper)

Question 25

crytallisation

Answer 25

solidification of a substance into highly structured form

Question 26

distillation

Answer 26

a technique used to separate substances in a liquid using evaporation through boiling and condensation

Question 27

smog

Answer 27

a mixture of smoke, gasses and chemicals, especially in cities