Siti placed 50ml of water in a beaker and covered it with a plastic wrap. After an hour in the sun, she saw droplets on the inner surface of the wrap. Which processes took place?
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Worked Solution
Step 1: Liquid water gained heat and evaporated into vapour.
Step [2-9]: Vapour hit the cooler plastic wrap and lost heat.
Step [2-9]: It condensed back into liquid droplets.
Correct answer: Evaporation then Condensation
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