Key Vocabulary

Question 1

Boiling

Answer 1

The change of state from a liquid to a solid

Question 2

Compound

Answer 2

Asubstance that is composed of two or more different elements

Question 3

Compressed

Answer 3

Squeezed into a smaller space. Gases can be compressed, but liquids and most solids cannot be compressed

Question 4

Concentrated

Answer 4

Is a solution that contains a large amount of solute relative to the amount that could dissolve

Question 5

Condensation

Answer 5

Formation of liquid when a gas cools down

Question 6

Condensing

Answer 6

The change of state from a gas to a liquid

Question 7

Crystallisation

Answer 7

Is a separation technique that is used to separate a solid that has dissolved in a liquid and made a solution

Question 8

Diffuse

Answer 8

Supread throughout another substance

Question 9

Diffusion

Answer 9

The spreading of one substance through another due to the movement of their particles

Question 10

Dilute

Answer 10

Is a solution that contains a small amount of solute relative to the amount that could dissolve

Question 11

Dissolve

Answer 11

A solid becomes incorporated into a liquid to form a solutin

Question 12

Distillation

Answer 12

The action of purifying a liquid by a process of heating and cooling

Question 13

Disperse

Answer 13

Distribute or spread over a wide area

Question 14

Evaporation

Answer 14

The change of state from a liquid to a gas. Evaporation occurs only from the surface of the liquid

Question 15

Filter

Answer 15

To pass a substance through a device to remove unwanted material

Question 16

Filtrate

Answer 16

A liquid that has passed through a filter

Question 17

Freezing

Answer 17

The change of state from a liquid to a solid

Question 18

Gas

Answer 18

State of matter with no fixed shape or volume

Question 19

Homogeneous

Answer 19

Detonating a process involving substances in the same phase (solid, liquid or gaseous)

Question 20

Infiltration

Answer 20

Process by which water on the ground surface enters the soil

Question 21

Insoluble

Answer 21

Does not dissolve

Question 22

Kinetic energy

Answer 22

Energy particles have to move.

Question 23

Liquid

Answer 23

State of matter that has a fixed volume, but no fixed shape

Question 24

Mixture

Answer 24

Contains two or more substances that are not chemically combined

Question 25

Particle model of matter

Answer 25

A model that explains the behaviour and properties of each of the states of matter

Question 26

Particles

Answer 26

The individual parts that make up all matter. (These particles are called atoms.)

Question 27

Precipitation

Answer 27

Rain, snow, sleet, or hail that falls to or condenses on the ground.

Question 28

Precipitate

Answer 28

An insoluble solid that emerges from mixing solutions together

Question 29

Pressure

Answer 29

The push of a substance against another. Eg. a gas exerts pressure on the container it is in because the particles in the gas collide with (push on) the sides of the container.

Question 30

Pure Substance

Answer 30

Substances that are made of only one type of atom or only one type of molecule

Question 31

Purify

Answer 31

Remove contaminants from

Question 32

Run Off

Answer 32

Rain that flows off from the land in streams and oceans.

Question 33

Saturated Solution

Answer 33

A solution containing the maximum amount of solute that can be dissolved at a given temperature