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

2. 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.

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

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

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

6. 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 !

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

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

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

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

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

12. 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

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

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