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longgone's avatar

Does surface tension of water decrease with rising temperature?

Asked by longgone (17109points) 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.

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.

longgone's avatar

Thanks, you two!

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