# Mixing polar and non polar substances [duplicate]

According to the theory of London dispersion forces, intermolecular forces are created in non polar substances by induction of instantaneous dipole to neighbouring molecules. If that is the case then when we mix water and oil, water being polar should induce polarity in oil and they should mix. But they don't. Doesn't water induce polarity to oil? Do I have a false concept or something.

## marked as duplicate by Ben Norris, ron, Klaus-Dieter Warzecha, Martin - マーチン♦, Curt F.May 16 '15 at 15:52

• This question has already been answered: chemistry.stackexchange.com/questions/2734/…. The short version is: Water is so strongly attracted to itself that it excludes the oil. – Ben Norris May 16 '15 at 12:19