1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Quiz question

  1. May 21, 2004 #1
    This was a national science quiz question:

    What's the smallest amount of molecules for water to have the properties of a fluid.
    a)1 molecule
    b)2 molecules
    c)6 molecules

    What's the answer and why?
  2. jcsd
  3. May 21, 2004 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The best answer is probably (c) 6 molecules, but really, you may need a lot more. (a) is ruled out from viscosity. If you want a liquid, you must see surface tension, which requires at least a bilayer. You can't make a stable bilayer with only 2 molecules. You might also want to have indistinguishability. There are questions and complications arising out of the method used to contain these molecules.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Quiz question
  1. Error in quiz (Replies: 1)

  2. Vorticity quiz (Replies: 3)

  3. I have a quiz -_- (Replies: 2)