Changes of state and particle model

Question 1

Define density

Answer 1

The amount of mass in a given volume

Question 2

Describe the particle arrangement of a solid

Answer 2

Tightly packed in a regular arrangement particles can only vibrate on the spot

Question 3

Describe the particle arrangement of a liquid

Answer 3

close together but with an irregular arrangement
They can flow over each other

Question 4

Describe the particle arrangement of a gas

Answer 4

Separated with no regular arrangement particles can move freely

Question 5

What is sublimation

Answer 5

When a solid changes into a gas without passing through a liquid state

Question 6

What is evaporation

Answer 6

when a liquid changes into a gas state

Question 7

What is condensation

Answer 7

When a gas changed into a liquid state

Question 8

explain how a bathroom mirror mists up

Answer 8

Hot water evaporates to form water vapour
This water vapour lands in the cooler mirror
The vapour condenses and returns to liquid state on the mirror