The concepts of an atom and chemical bond in physics and chemistry

Apart from the theoretically driven evolution of the meaning of some of the important physical and chemical concepts, there is yet another often forgotten source of important problems arising in physics and chemistry. It results from the approximations that are necessary for any application of quantum mechanics to practical problems within these two areas of scientific inquiry. As a side effect of such approximations, the fundamental differences in the understanding of some concepts by a physicist and a chemist may appear. This problem is best demonstrated by the analysis of the concept of an atom and chemical bond as an example.


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