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A: A valence electron is a type of electron present in an atom that works to aid in the process of chemical bond formation with other atoms. These electrons a... Full Answer > Filed Under: Atoms & Molecules.
It is not clear from your question what you mean by sharing substances, or exactly what it is that these substances are sharing. However, I'll make a guess. Chemical reactions â¦ often involve atoms sharing electrons. And what happens to them during chemical reactions is that the distribution of electrons shifts. Electrons don't have to actually leave one atom and go to another in order to form a chemical reaction. Sometimes it is more a matter of spending some time with one atom and some time with another, or with several others.