What are molecular dipoles?
Molecular dipoles exist if one or more of the atoms is more electronegative than the other(s)
The most common dipole is water.
Since the molecule is 'bent' they tend to be more in the upper part of the figure above. This gives a slight negative charge (called
This polarity also has many consequences for the behaviour of a polar liquid like boiling point, solvability, etc. and even the shape of snow flakes.