March 28, 2024, 05:48:41 PM
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Topic: Capillarity of water at various temperatures  (Read 1966 times)

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Offline thredbo

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Capillarity of water at various temperatures
« on: August 10, 2016, 04:11:34 AM »
I conducted an experiment today to test the capillarity of water at various temperentures. My results showed that as the temperature increased, the height of the water up the small narrow tube decreased.

I will have an in class test on friday which will require me to explain the chemistry behind why it happened.

Can someone explain why the level lowered in terms of bonding etc?

My loose hypothesis is that the water level decreased because the adhesive forces acting between the water and the glass tube was weakened as the water heated up, but why did the forces weaken?

Thanks

Offline Arkcon

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Re: Capillarity of water at various temperatures
« Reply #1 on: August 10, 2016, 05:47:15 AM »
Well, if you could define those forces, you may discover a relationship between temperature and the strength of those forces.  There may be other phenomena at work, however.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline thredbo

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Re: Capillarity of water at various temperatures
« Reply #2 on: August 10, 2016, 07:20:44 AM »
I have tried and tried again to work this out, and as of yet my efforts have been fruitless. I'm just not sure why I got the results that I did.

Offline AWK

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Re: Capillarity of water at various temperatures
« Reply #3 on: August 10, 2016, 07:45:29 AM »
Did you look at Wikipedia?
AWK

Offline thredbo

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Re: Capillarity of water at various temperatures
« Reply #4 on: August 10, 2016, 08:11:24 AM »
Yes


Offline Arkcon

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Re: Capillarity of water at various temperatures
« Reply #5 on: August 10, 2016, 12:51:36 PM »
Yes

Awesome, what forces cause capillary action?
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

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