Mathematical modeling is to establish a mathematical model according to actual problems, solve the mathematical model, and then solve the actual problems according to the results.
Chemical reaction refers to the process that molecules are split into atoms, and atoms are rearranged and combined to form new molecules, which is called chemical reaction. Reactions are often accompanied by luminescence, heating, discoloration and precipitation. The basis for judging whether a reaction is a chemical reaction is whether the reaction produces new molecules.