Final answer:
A polar molecule is one that has unequal (sharing of) electron attraction between atoms. In a polar covalent bond, one atom has a greater attraction for the electrons than the other atom, resulting in partial charges on the atoms.
Step-by-step explanation:
A polar molecule is one that has unequal (sharing of) electron attraction between atoms. This means that the electrons are not shared equally between the atoms in the molecule. In a polar covalent bond, one atom has a greater attraction for the electrons than the other atom, resulting in partial charges on the atoms. This is different from a nonpolar covalent bond, where the electrons are shared equally between two atoms.