The particulate nature of matter

Question 1

How are the particles arranged in a solid?

Answer 1

Particles are very close together and vibrate in a fixed position

Question 2

Solids have a fixed…

Answer 2

shape and volume

Question 3

What happens to particles in solids when heated?

Answer 3

The particles vibrate at a greater amplitude

Question 4

What are the 3 states of matter?

Answer 4

Solid, liquid, gas

Question 5

How are the particles arranged in a liquid?

Answer 5

very close together but they move and flow randomly part one another

Question 6

Water has a fixed…
But can change…

Answer 6

volume
Shape

Question 7

What happens to the particles in a liquid when heated?

Answer 7

the average speed of the particle increases

Question 8

How are the particles arranged in a gas?

Answer 8

Particles are far apart and move randomly in all directions

Question 9

Gases can change…

Answer 9

Shape and volume to fill any container

Question 10

What happens to the particles in a gas when heated?

Answer 10

The average speed of the particles increase

Question 11

What is conservation of mass?

Answer 11

When a substance changes state, its mass is conserved

Question 12

Can physical changes be reversed?

Answer 12

Yes

Question 13

What happens when a liquid’s temperature reaches its boiling point?

Answer 13

Boiling takes place

Question 14

Which of these processes doesn’t produce a liquid? Condensation, melting or evaporating?

Answer 14

Evaporation

Question 15

Name the processes that lead to a change in state
[5]

Answer 15

melting, subliming, freezing, boiling, condensing

Question 16

What is diffusion?

Answer 16

The net movement of particles from an area of high concentration to an area of lower concentration

Question 17

As molecular mass increases, the rate of diffusion…

Answer 17

decreases