Polymers are long molecules composed of a sequence of repeating structural units. They are a type of macromolecule and are made of a variety of different materials, including carbon, oxygen, nitrogen, and hydrogen. Polymers can be natural or synthetic, and they are used in a wide range of products and applications, including medical devices, automotive parts, packaging, and electronics. Polymers are also used to make plastics, rubber, adhesives, and coatings.
