Chemistry 1

Question 1

What are the three states of matter?

Answer 1

Solid, liquid, gas

Question 2

What are all things around us made of?

Answer 2

Particles

Question 3

Describe the particle arrangement in solids

Answer 3

Regular arrangement, touching

Question 4

Describe the particle arrangement in liquids

Answer 4

Random arrangement, touching

Question 5

Describe the particle arrangement in gases

Answer 5

Random arrangement, not touching

Question 6

How do particles in a solid move?

Answer 6

Vibrate on the spot

Question 7

How do the particles in liquids move?

Answer 7

Moving over each other randomly

Question 8

How do the particles in gases move?

Answer 8

Randomly in every direction until bumping into each other or their container

Question 9

Give two properties of gases

Answer 9

Can flow, can be compressed

Question 10

Give two properties of liquids

Answer 10

Can flow, cannot be compressed

Question 11

Give two properties of solids

Answer 11

Cannot flow, cannot be compressed

Question 12

Why can’t solids flow?

Answer 12

There are strong forces between the particles

Question 13

Why can liquids and gases flow?

Answer 13

There are weak forces between the particles

Question 14

Why can gases be compressed?

Answer 14

There is space between the particles

Question 15

Why can’t solids and liquids be compressed?

Answer 15

The particles are already touching

Question 16

Condensation

Answer 16

Gas to liquid

Question 17

Evaporation

Answer 17

Liquid to gas

Question 18

Deposition

Answer 18

Gas to solid

Question 19

Sublimation

Answer 19

Solid to gas

Question 20

Freezing

Answer 20

Liquid to solid

Question 21

Melting

Answer 21

Solid to liquid

Question 22

Melting point

Answer 22

The temperature when a substance changes from a solid to a liquid

Question 23

Boiling point

Answer 23

The temperature when a substance changes from a liquid to a gas

Question 24

What temperature is the melting point of water?

Answer 24

0 °C

Question 25

What temperature is the boiling point of water?

Answer 25

100 °C

Question 26

What happens to the temperature of a substance while it changes shape?

Answer 26

It stays the same

Question 27

What piece of apparatus is used to measure change in temperature?

Answer 27

Thermometer

Question 28

Kinetic theory

Answer 28

The theory that all particles are moving

Question 29

Gas pressure

Answer 29

Caused by gas particles colliding with the surface of a container

Question 30

What three factors affect gas pressure?

Answer 30

Temperature, size of the container, number of gas particles

Question 31

What is the relationship between the size of a container and gas pressure?

Answer 31

As temperature increases, the gas pressure increases

Question 32

What is the relationship between the size of a container and gas pressure?

Answer 32

As the number of gas particles increases, the gas pressure increases

Question 33

What is the relationship between gas pressure and the number of gas particles?

Answer 33

As the number of gas particles increases, the gas pressure increases

Question 34

What happens to particles when you heat them up?

Answer 34

They move faster