A polymer that softens when heated or hardens when cooled is known as a(n) _____.

Question

Quizplus · Accepted Answer

A thermoplastic polymer is one that can be melted and re-molded multiple times due to its ability to soften when heated and harden when cooled. Copolymers and condensation polymers do not necessarily exhibit this behavior. Addition polymers, such as polyethylene and polypropylene, are also thermoplastics but the question specifically asks for a polymer that softens when heated OR hardens when cooled. Elastomers, such as rubber, do not typically harden when cooled.

A Polymer That Softens When Heated or Hardens When Cooled