Today, we performed many chemical reactions, with many different materials. my reaction was one of zinc and lead (II) nitrate, the balanced reaction for which was Zn + Pb(NO3)2 —> Pb + Zn(NO3)2. I could tell this was a chemical reaction because of the change in color, the production of gas as well as the production of a precipitant, my reaction held all 3 indicators. The reactions in each section were similar in the change in the reactants, and the products of a reaction, from 2 reactants to one product, and ect. for each section, one can create a model for the products and their quantities in a reaction, and use it to predict the products of a reaction. All because each type of reaction in a section yields similar products, because of the type of reaction that defines that section.