A polymer is a large molecule composed of repeating subunits called monomers, which are chemically bonded together in a chain-like structure. This process is known as polymerization.
Polymers can be natural, like proteins and DNA, or synthetic, such as plastics and synthetic fibers. Their properties and characteristics depend on the type of monomers used and the arrangement of these monomers in the polymer chain.
Polymers have a wide range of applications, including in materials, textiles, medicine, and more, due to their diverse physical, chemical, and mechanical properties.