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longgone's avatar

Does surface tension of water decrease with rising temperature?

Asked by longgone (19764points) January 15th, 2016

My cousin realized that sugar makes a louder noise when being poured into cold water, as opposed to tea. Can anyone confirm whether this is due to an increase of surface tension?

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3 Answers

ARE_you_kidding_me's avatar

It decreases as temperature goes up.

ARE_you_kidding_me (20021points)“Great Answer” (2points) Flag as…
LuckyGuy's avatar

The surface tension decreases about 20% if you increase the temperature from room temperature to just below boiling.

I can’t say if that is enough to affects the noise significantly.

LuckyGuy (43867points)“Great Answer” (4points) Flag as…
longgone's avatar

Thanks, you two!

longgone (19764points)“Great Answer” (0points) Flag as…

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