What is Polar?
Having a pair of equal charges of opposite types. A highly electronegative atom (for example chlorine) bonding with an atom of lower electronegativity (for example hydrogen) creates a polar molecule. The atom of higher electronegativity draws the electrons away from the less electronegative atom. As a result, one end of the created molecule has a negative charge and another end has a positive charge. Polar molecules tend to alignment because the positive end of a molecule attracts the megative end of another molecule, and vice versa. The most well-known example of polar molecules is water.