weak forces that result in the attraction of normally non-polar particles
oppositely charged regions of polar molecules
some regions of polar molecules are always positive or negative
special di-di attraction w/ a molecule of hydrogen covalently bonded to F, O, or N
definite shape and volume, strong IMFs, particles vibrate in a fixed pos.
no def. shape/volume, strong IMFs, particles can flow past ea. other
no def. shape/volume,very weak IMFs, particles can go wherever they want
no def. shape/volume, electrons & pos. ions.