Which term describes a polymer with high molecular weight and durable substance?

• A. Plastic
• B. Pouch
• C. Polished finish
• D. Polymer

Answer: (D)

A polymer is a large molecule made up of many repeating units, and polymers are typically described by high molecular weight. High molecular weight gives long chain lengths, which contribute to strength and durability in many polymers. So the term that best fits “a polymer with high molecular weight and durable substance” is polymer, because it names the chemical family and the characteristic of being a long, chain-like molecule. A plastic refers to a material made from polymers that is moldable, which is related but focuses on form rather than the fundamental name of the substance. The other choices—pouch and polished finish—are unrelated to the molecular nature of the material.