What is a Polymer?
A polymer is a large molecule, or macromolecule, composed of many repeating smaller units called monomers. These monomers are linked together through chemical bonds to form a long chain, much like beads on a string.
Key Principles or Components
The process of joining monomers to form a polymer is called polymerization. Polymers can be naturally occurring, like DNA and proteins, or synthetic, such as plastics and rubber. Their properties depend heavily on the type of monomers used and how they are arranged.
A Practical Example
Polyethylene is a common synthetic polymer. It is made from repeating ethylene monomers (CH₂=CH₂) joined together. This polymer is used in plastic bags, bottles, and films due to its flexibility and durability.
Importance or Applications
Polymers are crucial to life and technology, forming the basis of all living organisms (e.g., proteins, nucleic acids) and countless synthetic materials. They are essential in industries ranging from packaging and textiles to medicine and aerospace.