Chain growth polymerization is a process where monomers, which are small molecules, link together to form long chains called polymers. This type of polymerization typically involves three main steps: initiation, propagation, and termination. During initiation, a reactive species starts the chain reaction, allowing the monomers to join together in a repeating pattern. In this process, the growth of the polymer chain occurs rapidly as each new monomer adds to the existing chain. Common examples of polymers produced through chain growth polymerization include polyethylene and polystyrene. This method is widely used in the production of various plastics and synthetic materials.