Friday, October 1, 2010 ; Karina's request in 5B (6H)
This is a request from Karina of 6H:
Q33c) I would like to ask for the answer to Q33. (c) as it is not stated in the answer key.
Location X is a in a cold place. The bottle has earlier lost heat to the colder environment and becomes cold. As glass is a poor conductor of heat, it gains heat slowly when the environment starts to get warm. So the warmer water vapour condenses on the colder glass.
Note: If X is in a warm place, the water vapour in the bottle would condense on the inner glass, forming water droplets inside as glass being a poor conductor of heat causes the trapped warm air in the bottle to lose heat very slowly to the environment. As a result, the warm air inside the bottle will condense on the colder inner surface of the glass.
Regards,
Mr Wan
posted by Allan at
11:12 PM
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