Because electrostatic flux does not depend on the location of the charges it links, it is independent of the quantum mechanical charge distribution in a molecule. By identifying a chemical bond with the electrostatic flux linking an atom’s core to its valence charge, one can generate a purely classical model of chemical bonding. The resulting bond flux model shows that the chemical bond is a classical, not a quantum, concept. It makes no distinction between covalent and ionic bonds, but provides quantitative insights into chemical structure and properties that complement those of quantum theory.