Answer:
Step-by-step explanation:
Dipole-dipole forces or interactions exist between polar molecules. Some regions on a molecule have more electrons in a certain region, while others have fewer electrons in certain regions.
Atoms that are more electronegative than the rest of the molecule pull electrons closer. This creates a partial positive charge where electrons are not as close to one atom, and a partial negative charge where the electrons are closer to the other atom in the molecule. Water is a classic example of a polar molecule. Oxygen is quite electronegative so it pulls the shared electrons closer to itself--this creates a partial negative charge on oxygen. Hydrogen is not that electronegative so it does not pull the electrons close to itself--this creates a partial positive charge.
A dipole is created. The positive end of the dipole attracts the negative end of another molecule with a dipole.