what is the difference between a polar and non-polar molecule

Difference between Polar and Nonpolar

POLAR

NONPOLAR

Asymmetrical

Symmetrical

Has electrical poles

Does not have electrical poles

One end of molecule has positive whereas the other end has negative charge

Does not have profusion of charges at opposite ends

H bonds occur in polar bonds

Van der waal interactions between nonpolar bonds

At Least one polar covalent is present in all polar molecules

Nonpolar covalent is not present in all nonpolar molecules

Charge separation

No charge separation

Dipole moment

No dipole moment

Example: Water

Example: Oil