CAIE IGCSE Physics Condensation and Solidification

Practise identifying condensation and solidification and explain how particles lose energy, move closer or become fixed while energy transfers outward.

Exam points

identify gas-to-liquid change on a cold surface or in a condenser as condensation
state that condensation and solidification transfer energy to the surroundings
link solidification to stronger bonds and particles fixed in an ordered arrangement

[Maximum number: 2]

Fig. 2.1 shows an electric tumble dryer used to dry wet clothes.

Fig. 2.1

Hot air blows into the drum. The air gains water vapour from the clothes and then leaves the drum. The moist air enters the condenser. Cool air leaves the condenser, passes through the heating element and enters the drum again.

The air is cooled as it passes through the condenser.

Describe and explain one other way in which the air leaving the condenser is different from the air entering the condenser.
description
explanation

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2.2.3.3—Condensation and solidification in question 1