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  #1  
Old 02-22-2006, 01:02 PM
Bubblebutt246 Bubblebutt246 is offline
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Red face help


Hey i need help i have a science project but i don't have an answer i was wonder if u knew.
Do soap bubbles last longer on warmer or colder days?
i know i am suppose to find that out but i wanted to know if u knew it.

Thanks,
Paige
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Old 02-23-2006, 09:59 AM
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I have a hypothesis, but I'm not sure. You can test it.

I guess that the bubbles exist because of the links between the hydrophobic bonds in the soap (soap is made up of hydrophobic chains connected to hydrophillic ends. soap is actually made by the combination of lye (a strong base, solid NaOH, which is hydrophillic) and lard (animal fat, which is hydrophobic). And I believe the bonds can stay together longer on a colder day, because the air molecules have less motion and disturb the soap molecules less.

This hypothesis, however, contradicts how bubbles pop as they go higher, so I'm not sure. You can (and should) get into some background research on what bubbles actually are, what soap is, and what is the definition of temperature if you're planning to start an experiment on this.

Good luck!
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Old 02-23-2006, 02:47 PM
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Lightbulb Well...

Dreamer you have a point.

Also there are different kinds of soaps and they are not all the same. This is a nice experiment, but I really don't know whether they last longer on cold/hot days. If i had to take a guess, warmer days. Just because I think of Charles Law about temp.

Hope all goes well.
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