“The process in which large members of small molecules combine to form macromolecules is called polymerization. Small molecules are called monomers and large molecules are called polymers. Say no to plagiarism. Get a tailor-made essay on “Why violent video games should not be banned”?Get the original essayPolymerization is divided into two types.Addition polymerization.Condensation polymerization.Process in which a large number of small Molecules (monomers) undergo a self-addition reaction to form macromolecules called addition polymers. The process in which a large number of molecules (monomers) combine to form macromolecules with the removal of the side product, usually water, is called condensation polymerization and the polymer is called a copolymer.TYPES OF POLYMERS: POLYETHENE : The first commercially produced polymer is also the simplest and most common polyethylene. Its systematic name is poly(ethene), which means it is a polymer made from the monmer ethene. Ethylene is a small molecule containing two carbon atoms linked by a double bond and four hydrogen atoms, two bonded to each other. POLY(PROPENE): Polypropene, a synthetic resin constructed by polymerization of propylene. Part of a large family of polyolefin resins, polypropylene is molded or extruded into many plastic products in which toughness, flexibility, light weight and heat resistance are required. AMIDE LINKS: One of the most common molecules in biochemistry is a polymer called protein. These are made up of monomers called amino acids and are joined by an amide bond. These bonds are made by a carboxylic group reacting with an amine group forming the bond and removing the water. This bond is the basis of another type of NYLON: nylons are made from two types of monomers. These are dicarboxylic acids and diamines. The first nylon synthesized used a monomer with a four-carbon chain with a carboxylic acid group at each end and another monomer with a six-carbon chain with an amine group at each end. Keep in mind: This is only a sample. Get a personalized article now from our expert editors. Get a custom essay POLYESTER: The ester bond is a carboxylic acid group in which the hydrogen has been replaced by the carbon of another organic group. Polyesters are widely used as fibers for clothing as well as many beverage bottles. They are also used to make thin films for applications such as videotapes..