Polar molecules like water Spin why?

[maxsm]

Water molecules are polarized, so why don't the molecules in a glass of water simply line up with opposite + and - ends and come to a halt?

 

[maxsm]

Heh, in the glass of water, we also always have some leftover "-"'s and "+"'s at the edge of the glass where no other water molecules are touching the water, therefore if all molecules lined up with opposites attracting, there would still be some negatives and positives unattached to other water molecules, making the glass of water uneven in total.

Maybe there is such a strong spin to the molecule, that the molecules won't line up anyway since they are spinning fast. But why are they doing this?

 

[cdotter]

Because dipole-dipole forces are very weak. http://chemed.chem.purdue.edu/genchem/topicreview/bp/intermol/intermol.html#force