Added: 1 year ago
From: BatteryKids
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  • So what is the force of adhesion? not hydrogen bond? isn't it the same thing? yeah, I probably got it confused from the O.P..

  • I would assume the salt deposit at the end of the paper towel while the water climb to the other end. Best result is saline water not salt water; which your body can tolerate.

    It is an old chemist's trick while stranding in the middle of the ocean.

  • It's cohesion between like molecules and adhesion between the molecules of the paper and those of the water.

  • Need...more...science...

  • only one problem, you said the cohesive forces between the water and the paper towel. WRONG the adhesive forces between the water and the paper towel.

    Remember that*

    Cohesion: molecular force between particles of the same substance that hold the molecules together (like H2O + H2O)

    and

    Adhesion: molecular force of attraction between unlike substances, that hold them together

  • But you can use this experiment at sea, to filter salt water into fresh water...ahahaha if only the boat people know science!!!

  • @UnitedPebbles truely?

  • @UnitedPebbles how? the paper towel doesn't filter the salt.

  • Also the effect of air pressure or air movements due to gravitational pulls of inter-planetary alignment and others is not assume to be constant. I can say that you are using a vacuum to push the air above the beaker with the water to force the water molecule to travel to the empty beaker via cohesion.

  • But wait a minute dude....does this prove that intermolecular forces of water is stronger than G force? isn't it like pitting quantum vs relativity and so forth?

    Note both beaker is at similar height, thus potential energy is the same. Experiment failed..ahahahaha

  • Nice job . . .

  • Congratulations!

    If you want a full explanation have a look at US pat. 6,766,817 or just search for Tubarc videos.

    Cheers,

    Elson Silva, PhD

  • Was the glass half empty or half full at the end?

  • You got cohesion and adhesion reversed. Cohesion happens between like molecules (within the water). Adhesion happens between dissimilar molecules (between water and paper towel).

  • That was a really good video. thanks man

  • Thank you this video really helped me on my science project thats due tommorow!

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