Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Water molecules

  1. Aug 13, 2008 #1
    Hallo Everyone,

    I am trying to find out what happens to the size of a water particle in the gas phase and water phase. Knowing that the max molecular size of one water molecule is 2,78Angstroms, I am not quite sure at which state this dimension is valid. When combined with other molecules (a mass of water ) then the molecules have a slightly lower size I guess due to the reduction of the angle between the two H atoms. In vapour state where one molecule may be airbourne will the molcule have an overall max dimension of 2,78A or greater?
    As the water freezes the mass goes down but the volume goes up (expands) due to the alignment of the molecules, what measurment would one molecule have in this state?
    Van der vaal says that water molecules have two sizes, one for hydrogen bonded and one for non-hygrogen bonded molecules but I dont know what these measuremnets are!
    Can anyone help?


    Rob (Muppet68)
  2. jcsd
  3. Aug 16, 2008 #2
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Water molecules Date
A Do Falaco solitons also occur in water on a microscopic scale Dec 5, 2017
B Absorption bands of liquid and vapor water Nov 15, 2017
Water in BEC form Oct 7, 2015
Water Molecule Realignment Sep 19, 2008
Water molecule? Jul 17, 2005