To know that condensation is the process of gas cooling to form a liquid. Mª Teresa Villarroya I Font CONDENSATION.

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Presentation transcript:

To know that condensation is the process of gas cooling to form a liquid. Mª Teresa Villarroya I Font CONDENSATION

WHAT IS CONDENSATION? It’s the cooling process that changes gas into liquid. It’s the opposite of evaporation.

NAME THE CHANGE GASLIQUID GAS EVAPORATION CONDENSATION

LOOKING AT THE OUTSIDE OF A GLASS OF ICED WATER…  What has happened ?  Why has it happened ?  What is it called ?

Iced water in a glass: Droplets of w―――― form on the outside of the glass. When water v――――― in the air hits the c――― surface of the glass it condenses into l――――― water droplets. ( liquid, water, cold, vapour )

LOOKING AT THE BREATHING ON A MIRROR…  What has happened?  Why has it happened?  What is it called?

Breathing on a mirror Water v――――― in the breath hits the cold mirror and c―――――――― into water d―――――――. The mirror “steams up”. After a while the liquid droplets on the mirror e―――――――― into the air as water vapour, and the mirror clears. ( droplets, vapour, evaporate, condenses)

LOOKING AT THE DEW ON THE GRASS What has happened? What has happened? Why has it happened? Why has it happened? What is it called? What is it called?

The dew on the grass Water v――――― in the a―― hits a cold Water v――――― in the a―― hits a cold surface and c―――――――― into water d―――――――. ( condenses, air, vapour, cold, droplets)

LOOKING AT THE FROST ON THE TREE What has happened? What has happened? Why has it happened? Why has it happened? What is it called? What is it called?

The frost on the tree When temperature is b ―――― 0ºC, When temperature is b ―――― 0ºC, water v――――― in the a―― hits the water v――――― in the a―― hits the cold surface and c――――――― into a t――― white layer of i――. cold surface and c――――――― into a t――― white layer of i――. ( condenses, below, ice, air, vapour, thin)