What's the matter? (solids, liquids & gases)

Question 1

ATOMS

Answer 1

tiny particles that make up all substances

Question 2

COMPRESS

Answer 2

to squeeze together

Question 3

CONDENSE

Answer 3

when a substance changes from a gas to a liquid.

Question 4

CONTRACTION

Answer 4

when a substance decreases in volume.

Question 5

EVAPORATE

Answer 5

when a substance changes from a liquid to a gas.

Question 6

EXPANSION

Answer 6

when a substance increases in volume.

Question 7

KINETIC THEORY

Answer 7

a way of describing the behaviour of gases

Question 8

GLOBAL WARMING

Answer 8

is the increase of earth’s average surface temperature due to effect of greenhouse gases.

Question 9

AIR PRESSURE

Answer 9

the mass of air pressing down on every part of the world.

Question 10

GAS

Answer 10

a state of matter where the particles are far apart and moving around.

Question 11

FREEZE

Answer 11

when a substance changes from a liquid to a solid.

Question 12

FLOW

Answer 12

when substances can move around an obstacle.

Question 13

LIQUID

Answer 13

a state of matter where the particles are close together but not in a fixed pattern.

Question 14

MELT

Answer 14

when a substance changes from a solid to a liquid

Question 15

VOLUME

Answer 15

amount of space a particle can occupy

Question 16

TEMPERATURE

Answer 16

a measure of the kinetic energy of the particles

Question 17

SOLID

Answer 17

a state of matter where the particles are close together in a grid pattern.

Question 18

PRESSURE

Answer 18

force applied over an area

Question 19

OZONE LAYER

Answer 19

layer in the atmosphere that absorbs. harmful ultraviolet radiation from the sun.