Conversation so far:
What is chemical energy?
Chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform other chemical substances. Examples include batteries, food, gasoline, and etc.
Describe a chemical reaction.
No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Question: How is it represented mathematically?
Self-contained rewrite: How is a chemical reaction represented mathematically?