Explanation:
Chemical reactions are defined as the reactions in which exchange of valence electrons take place. As a result, identity of the reactants change in a chemical reaction.
For example, [tex]H_{2} + Cl_{2} \rightarrow 2HCl[/tex]
Hence, there occurs sharing of valence electrons between hydrogen and chlorine atom due to which they are able to attain stability.
Thus, we can conclude that chemical reactions are result of an atom attempting to share or donate valence electrons to attain stability or complete its octet.
