The document describes the five main types of chemical equations: 1) Synthesis reactions - Combining two or more substances to form one product 2) Decomposition reactions - One substance breaking down into two or more products 3) Single replacement reactions - An element replaces another in a compound 4) Double replacement reactions - Ionic compounds exchange ions to form new compounds 5) Combustion reactions - A substance reacts with oxygen to form oxides Examples of each type of reaction are provided, along with guidance on writing and balancing chemical equations.