How Do Polymers Compare to Semiconductors, Metals, and Ceramics?

[360modina]

Tell me what your ideas are for this multiple choice question

Compared to semiconductors, metals, and ceramics, polymers:

a) have lower melting points
b) tend to have lower densities
c) deform plastically to a higher extent
d) have lower electrical conductivity
e) all of the above
f) a, b, & c
g) a, b, & d

As of now I'm 99% sure that a is true, polymer tend to melt easily. I'm actually sure that b is true also.

 

[redargon]

do polymers (I'm assuming things like plastics, but there are also natural and biopolymers) conduct electricity? What about metals, ceramics and semiconductors?

What does plastic deformation invlove? Which property of a material determines its plastic deformation?