3 ms·

> because that's just the way liquid behaves That's almost worse than the original! :) Water evaporates because their energy (heat) causes the molecules to bo

> because that's just the way liquid behaves That's almost worse than the original! :) Water evaporates because their energy (heat) causes the molecules to bounce around and sometimes escape the cohesive attraction of their friends and into the air. More energy, more evaporation. This works well with small water molecules, less well with larger and heavier liquids.

BoiledCabbage 3y ago
> escape the cohesive attraction of their friends Hmm, could you call this mysterious "cohesive attraction" > the bonds which hold water molecules together. ...? If not, then please do describe this cohesive attraction. I've come to realize some people just like to complain on the internet.
- quesera 3y ago
  The "bonds which hold water molecules together" are, I think, the covalent bonds holding the Hydrogens to the Oxygen. Evaporation does not break those bonds, it's just the intact molecules energetically escaping the surface tension of the liquid. (Disclaimer: My high school chemistry books have not left their shelves in many years, except when moving.)
  - BoiledCabbage 3y ago
    "Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity." Surface tension is a bond that binds water mold together similar to how mortar holds bricks together in a wall. Mortar doesn't make the brick solid, but it holds the bricks together. People are reading bond in two different ways. Bond within a molecule vs bond between molecules. 1. https://www.usgs.gov/media/images/surface-tension-forms-a-strong-bond-surface-a-water-body#:~:text=Surface%20tension%20forms%20a%20strong,U.S.%20Geological%20Survey https://www.usgs.gov/media/images/surface-tension-forms-a-st...
    - paholg 3y ago
      This conversation is a very clear sign that the article is poorly worded. If it takes this much discussion to get at its meaning, it's probably not communicating clearly.

BoiledCabbage 3y ago

> escape the cohesive attraction of their friends Hmm, could you call this mysterious "cohesive attraction" > the bonds which hold water molecules together. ...? If not, then please do describe this cohesive attraction. I've come to realize some people just like to complain on the internet.

quesera 3y ago
The "bonds which hold water molecules together" are, I think, the covalent bonds holding the Hydrogens to the Oxygen. Evaporation does not break those bonds, it's just the intact molecules energetically escaping the surface tension of the liquid. (Disclaimer: My high school chemistry books have not left their shelves in many years, except when moving.)
- BoiledCabbage 3y ago
  "Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity." Surface tension is a bond that binds water mold together similar to how mortar holds bricks together in a wall. Mortar doesn't make the brick solid, but it holds the bricks together. People are reading bond in two different ways. Bond within a molecule vs bond between molecules. 1. https://www.usgs.gov/media/images/surface-tension-forms-a-strong-bond-surface-a-water-body#:~:text=Surface%20tension%20forms%20a%20strong,U.S.%20Geological%20Survey https://www.usgs.gov/media/images/surface-tension-forms-a-st...
  - paholg 3y ago
    This conversation is a very clear sign that the article is poorly worded. If it takes this much discussion to get at its meaning, it's probably not communicating clearly.