What is the basic unit that can join together with other small units to form polymers?

The basic unit that can join together with other small units to form polymers is called a monomer. Monomers are the simplest form of molecules and serve as the building blocks for larger and more complex structures, known as polymers. When multiple monomers chemically bond together through processes like condensation reactions, they create long chains or networks that define polymers.

In contrast, polymers are the resultant structures composed of these monomers. A macromolecule is a term often used to describe very large molecules, including polymers, without specifically referring to the individual components. A polyatomic ion refers to a charged entity composed of two or more atoms that are covalently bonded, which is unrelated to the formation of polymers. Understanding the role of monomers is crucial in fields such as biochemistry and materials science, as it forms the foundation for comprehending how complex biological and synthetic materials are formed.