Topic 1 - States of Matter

Question 1

what are the three states of matter?

Answer 1

solid, liquid, gas

Question 2

what does the state of matter depend on?

Answer 2

how strong the forces of attraction are

Question 3

what does the strength of forces of attraction depend on?

Answer 3

material, temperature, pressure

Question 4

what are the forces of attraction in solids?

Answer 4

strong

Question 5

how are particles arranged in solids?

Answer 5

regular lattice arrangement

Question 6

why do solids take a definite shape and volume?

Answer 6

particles dont move from their positions

Question 7

what happens when a solid becomes hotter?

Answer 7

particles vibrate about their positions, vibrating more the hotter they become

Question 8

what are the forces of attraction in liquids?

Answer 8

weak

Question 9

how are particles arranged in liquids?

Answer 9

randomly arranged and free to move past each other, but stick together

Question 10

do liquids take a definite shape and volume?

Answer 10

liquids have a definite volume but don’t keep a definite shape. they will flow to fill the bottom of a container.

Question 11

what happens when a liquid gets hotter?

Answer 11

particles are constantly moving with random motion. the hotter it gets the faster they move.

Question 12

what are the forces of attraction in gases?

Answer 12

very weak

Question 13

how are particles arranged in gases?

Answer 13

particles are far apart and free to move. they travel in straight lines

Question 14

do gases take a definite shape and volume?

Answer 14

no, they will fill any container

Question 15

what happens when a gas gets hotter?

Answer 15

particles move constantly with random motion. the hotter it gets, the faster they move.

Question 16

how do solids melt?

Answer 16

particles gain more energy when heated
particles vibrate more, weakening the forces of attraction
eventually, they have enough energy to break from their positions and become liquid

Question 17

how do liquids evaporate?

Answer 17

particles gain more energy when heated
particles move faster, weakening the forces of attraction
eventually, they have enough energy to break from their positions and become gas

Question 18

what is a solid becoming a liquid called?

Answer 18

melting

Question 19

what is a liquid becoming a solid called?

Answer 19

freezing

Question 20

what is a liquid becoming a gas called?

Answer 20

evaporating

Question 21

what is a gas becoming a liquid called?

Answer 21

condensing

Question 22

what is a solid becoming a gas called?

Answer 22

subliming