The change of thermodynamic equilibrium-state functions, such as the change in enthalpy Delta H or free enthalpy Delta G, in bond dissociation processes is well known in general. On the other hand, the systematic investigation of the change in electrical and electro-optical properties, such as the dipole polarizability alpha, seems to be a rather unexplored field in physical chemistry. In this Communication we report on a remarkable correlation between the change in dipole polarizability Delta alpha and the bond dissociation energy D-298(0) for various dissociation processes.