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

3. 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.

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

5. On a dry day there is only a little water vapour in the air

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

7. 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
H e l l o !

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

9. 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
Condensation happens when water vapour … cools/heats
Condensation is the opposite of … dissolving/evaporation
On a wet day there are more… air particles/water particles in the air

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

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

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

13. Thanks
Submitted by
Deepak Ninoria
Gaziyabad

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“Don’t make me read, make me understand “