Polar Molecules

Definition

Polar molecules are molecules that have an uneven distribution of charge, meaning they have a positive and negative end or pole.

Related terms

Dipole Moment: It's the measure of the polarity of a molecule. The larger the difference in electronegativities of bonded atoms, the larger the dipole moment.

Electronegativity:

It is a measure of how strongly an atom can attract electrons towards itself in a chemical bond.

Hydrogen Bonding: A type of intermolecular force where hydrogen atom from one polar molecule is attracted to an electronegative atom (usually nitrogen, oxygen or fluorine) from another molecule.