Condensation and Evaporation

Question 1

What states does condensation involve

Answer 1

Gas to Liquid

Question 2

What happens when a gas cools

Answer 2

Particles slow down and lose kinetic energy

The attractive forces between the molecules pull them together

Question 3

What are the two conditions for condensation

Answer 3

Temperature = cold enough

Gas particles = close enough

Question 4

When does water vapour in the air condense

Answer 4

When it hits a cold surface

Question 5

What states does evaporation involve

Answer 5

Liquid to Gas

Question 6

What is evaporation

Answer 6

When particles escape from a liquid

Question 7

When do particles from a liquid evaporate

Answer 7

Boiling point

Particles are bear the surface of the liquid(below boiling point)

Question 8

What 2 conditions are needed for a particle of a liquid to escape without the liquid reaching boiling point

Answer 8

Travelling in the right direction to escape

Travelling fast enough to overcome the attractive forces of the other particles in a liquid

Question 9

When will the rates of evaporation be faster? 3 ways

Answer 9

Temps higher
Density is lower
Surface area is larger

Question 10

When will the rates of condensation be faster? 3 ways

Answer 10

Temperate of gas is lower
Density is higher
Airflow is less