Physics · May / June 2022 · Paper 41 · Question 3
0625
As printed in the paper
The question as text
During a picnic on a warm, dry day, a metal can of lemonade is wrapped in a damp cloth. Evaporation cools the water in the cloth.
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3(a)[3]
fast(er) / high(er) speed / (more) energetic molecules escape (into air)
average speed / average kinetic energy of molecules decreases
temperature related to speed / energy of molecules or slow(er) / low(er) speed / less energetic molecules remain (in water)
3(b)[3]
any three from:
atoms / ions vibrate
(vibrating) atoms / ions hit electrons
electrons propelled / travelling through metal / moving through metal
electrons hit (distant) atoms
free electrons / delocalised electrons mentioned
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