Polymers-giant molecules made up of many repeating units called monomers.
Addition polymerization, also called polyaddition or chain growth polymerization. The monomers double bond opens up to form a continuous chain.
Condensation Polymerization- A condensation polymer can be defined as a polymer in which the structural unit contains fewer atoms than the monomer or monomers from which the polymer is derived. There must be an elimination of a by-product, usually water.
example #1- the product is not water but HCl