Final answer:
Chemical reactions can be classified into three types: synthesis, decomposition, and single replacement reactions.
Step-by-step explanation:
Chemical reactions can be classified into various types based on their characteristics and the nature of the reactants and products involved. The three common types of chemical reactions are:
- Synthesis reaction: In this type of reaction, two or more substances combine to form a single product. The general form of a synthesis reaction is A + B → AB. For example, the synthesis of water: 2H2 + O2 → 2H2O.
- Decomposition reaction: In this type of reaction, a single compound breaks down into two or more simpler substances. The general form of a decomposition reaction is AB → A + B. For example, the decomposition of water: 2H2O → 2H2 + O2.
- Single replacement reaction: In this type of reaction, an element reacts with a compound to form a new compound and a different element. The general form of a single replacement reaction is A + BC → AC + B. For example, the reaction of zinc with hydrochloric acid: Zn + 2HCl → ZnCl2 + H2.