The mystery of water ?

Discussion in 'Chemistry' started by thinking, May 3, 2010.

  1. thinking Banned

    so the shell is outside the parameter of the molecule its self , the H2O bond
  2. thinking Banned

    what of though the interior of the H2O molecule ?
  3. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

    What do you mean "interior"?
  4. thinking Banned

    what the definition of interior implies
  5. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

    And how do you get an "interior" when the thing consists of 3 atoms?
    It's hardly enclosed.
    And what do you mean "what of it?"
  6. soullust Registered Senior Member

    water is made up of three explosive parts, yet it puts out fire amazing really.
  7. thinking Banned

  8. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

    You're probably better off replying to your own posts, since you haven't, so far, managed to express yourself very clearly to anyone else.
    What exactly do you mean by "parameter"?
    That would be why it's called a "shell".
    Water molecules attach themselves to the surface of whatever's put into it.
  9. Trippy ALEA IACTA EST Moderator


    It is completely within the expectations of water - as long as you're willing to apply a little common sense and logic to the situation.

    The only thing that particularly mystifies me about water is how certain groups of people continue to misunderstand or misrepresent it.

    If this thread doesn't strt making sense soon, and questions don't start being addressed, I'm going to move it to Pseudoscience.
  10. Doreen Valued Senior Member

    Water is interesting.

    It expands when it turns into a solid - hence it is less dense and floats, so freshwater fish don't get flattened.

    It is transparent.

    It has a very heat of vaporization - making sweating effective.

    For its mass it has melting and boiling points.

    The H-O-H angle is close to the ideal tetrahedral angle.

    Very high specific heat.

    High surface tension - which helps capillary action.

    Good absorber of heat.

    High specific heat index - works well as a coolant, that is.

    Strong intermolecule hydrogen bonding.

    It is the only substance found naturally on earth in all three states: solid, liquid and gas.

    It has a big range as a liguid, most other substances do not have such a range.

    It is not a coincidence that we are water-based.

    It is an excellent solvent.
    Last edited: May 3, 2010
  11. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

    Close: it's a bad conductor of heat. :D
    It will transfer heat through better through convection.
  12. Doreen Valued Senior Member

    Whoops, meant absorber, though this is redundant in my brainstorming list.
  13. Doreen Valued Senior Member

    Found a couple of others I did not know.

    It moves more freely when it is squeezed.

    Interesting that they noticed that water's anomalous properties have to do with increased order.

    And then snow crystals are rather interesting. But I don't know how unique this is since not so many liquids fall from the sky and freeze.

    Here's another article on water's anomalies

    where they say......
    Would have been nice if they gave the list.

    This was interesting also

    and it goes on to explain how this affects supercooled water.
  14. Trippy ALEA IACTA EST Moderator

    I don't doubt that.

    This is only true of ordinary hexagonal Ice (Ice I I believe).
    It is also true of Gallium, Bismuth, Germanium, and Silicon, and may also be true of Acetic acid and Antimony (but there's reason to suspect this may be an error.

    So are Liquid Oxygen (transparent Blue), Liquid Hydrogen, and Liquid Helium.

    Tellurium has a comparable heat of vaporization, There are 56 elements with enthalpies of vaporization higher than that of water, and 16 elements with enthalpies of vaporization below that of water. The most effective substances for shedding heat through vaporization would be Tungsten, nearly 21 times more efficient.

    Because of the strength of the Hydrogen Bonds, however, Berylium weighs half as much, and has a melting point nearly 6 times higher, and a boiling pont nearly 25 times higher.

    This is a direct result of the low atomic number of Hydrogen (it has to do with the presence of the two non-bonding electrons in the valence shell, and how closely they and the bonding electrons sit to the nucleus.

    Ammonia, Helium, and Parrafin wax have higher specific heats (depending on how you measure it).

    The sruface tension of Mercury is nearly 6.5 times higher.

    I believe you've already been corrected on this one.

    You've already made this statement.

    Not as strong as in, for example, Hydrogen Flouride, or, I believe, Hydrogen Chloride. The Hydrogen bonding in Hydrogen Flouride is so strong that it artificially lowers the pH of aqueous HF solution.

    This, is a actually true.

    Again, Berylium has a range between BP and MP of something like 10 or 12 times as high as water, for half the weight.

    A statement of the Anthropic principle.
    We evolved to be water based because water was the best substance available to fullfill the role that it does.

    How do you define 'excellence' as a solvent?
  15. soullust Registered Senior Member

  16. jmpet Valued Senior Member

    Dwyddyr- stop poking for an answer. Water gets LIGHTER as it freezes; it is the universal solvent etc. etc. Water is the #1 prerequisite for life for these reasons... whatever we ever find, it will be water bags like us.
  17. Trippy ALEA IACTA EST Moderator

    Less Woo, more science.


    I've already demonstrated how most of these claims are far from being unique when it comes to water, and water is far from being the universal solvent.


    To give one example.

    As far as not poking for answers... Are you saying that only some assertions should be questioned?
  18. soullust Registered Senior Member

  19. Nasor Valued Senior Member

    Contrary to popular belief and countless low-lever chemistry textbooks, the non-bonding electrons in water don't really have much to do with the bent shape. Based on the bonding within the molecule, the protons would ideally be 90 degrees from each other. But this would cause the protons to bump up against each others van der Waals radius, so they bend their bond angle slightly to be farther apart from each other.
  20. cosmictraveler Be kind to yourself always. Valued Senior Member


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