Condensation To know that condensation is the process

Condensation • To know that condensation is the process of gas cooling to form a liquid

So what is Condensation? • Condensation is a process, a change • It’s the cooling process that changes gas into a liquid • It is the opposite of evaporation.

Particles again folks! Air particles Water particles Dry day Wet day

Dry day • On a dry day there is only a little water vapour in the air

Wet day • On a damp day there is much more water vapour in the air

Bathroom mirror • After a shower your bathroom is filled with steam (water vapour) from the hot water. • When it hits the cold glass of the mirror it turns back to water and forms tiny droplets Hello!

Look at the can • What has happened? • Why has it happened? • What do we call the process?

Look at the glass of ice • What has happened? • Why has it happened? • What do we call the process?

Look at mirror on top of the hot drink • What has happened? • Why has it happened? • What do we call the process?

Breath on your mirrors • What has happened? • Why has it happened? • What do we call the process?

09 -10 -06 Condensation • To know that condensation is the process of gas cooling to form a liquid Task 1 – choose the best word to complete these sentences 1. Condensation happens when water vapour … cools/heats 2. Condensation is the opposite of … 3. On a wet day there are more… particles in the air dissolving/evaporation air particles/water

Next… • Illustrate what happens when steam from a kettle hits a cold window • Useful words –water vapour –gas –cools –evaporation –process -steam -liquid -heats -condensation -changes

Extension • Explain in your own words what happens on a cold day when you breath on a cold window • List other examples of condensation

What have you learnt? • What is condensation the process of ? • Can you give 3 examples of condensation happening?