دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the quality of being either negative or positive;in magnetism. the north or south pole of a magnet.

n: in nature, molecule sconsist of group of atoms bonded together. Overall the electrial charge is zero beause the number of protons and electrons balance. However some covalent molecules may express polarity, where the electrical charges, though balanceing

attraction created by the weak electrostatic forces of distributed charge in a polar molecule. Even though the water molecule as a whole is neutral, the polarity or the molecule leads to attraction between individual molecules from slight negative and pos