Chemical reactions describe the changes between reactants (the initial substances that enter into the reaction) and products (the final substances that are present at the end of the reaction). Chemical reactions involve a rearrangement of the atoms in reactants to form products with new structures in such a way as to conserve atoms. Chemical equations are notations that are used to summarize and convey information regarding chemical reactions. The first chemical equation was diagrammed by French iatrochemist Jean Beguin (1550–1620) in 1615.
In a balanced chemical reaction, all of the matter (atoms or molecules) that enters into a reaction must be accounted for in the products of a reaction. Associated with the symbols for the reactants and products are numbers...Read more