The resultang wave can have higher or lower amplitude than the component waves. See constructive interference and destructive interference . A highly reactive substance that forms and then reacts further during the conversion of reactants to products in a chemical reaction. Intermediates never appear as products in the chemical equation for a net chemical reaction . intermolecular force. An attraction or repulsion between molecules.
Intermolecular forces are much weaker than chemical bonds.
Hydrogen bonds, dipole-dipole interactions, and London forces are examples of intermolecular forces. While changes in internal energy can be measured using calorimetry, absolute values of internal energy usually cannot be determined. Changes in internal energy are equal to the heat transferred plus the work done for any process. An atom or molecule that has acquired a charge by either gaining or losing electrons. Ion exchange is a method of separating ions from a solution by reversibly binding them onto a resin that has charged sites on its surface.