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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

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

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

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 !

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?

Condensation 09-10-06 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

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

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?

Thanks Submitted by Deepak Ninoria Gaziyabad

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