You heat a plastic pipe, soften it, shape it, and then let it cool. After it is hardened, you realize that you need to
bend the pipe at a greater angle. You reheat the pipe, but the pipe will no longer soften. The pipe you are
working with is most likely a _____ pipe.
A) thermoplastic
B) thermosetting
C) solid wall
D) cellular core wall
Question 2
Plastics contain _____, which are long chains of molecules that manufacturers can mold, cast, or force through a
die into desired shapes.
A) pigments
B) polymers
C) core walls
D) chamfers