Question

Why are metals good conductors of heat and electricity?

A. anions rotate around the stationary electrons
B. cations rotate around the stationary electrons
C. free moving atoms in metals carry both heat and electric current
D. free moving electrons in metals carry both heat and electric current
E. free moving protons in metals carry both heat and electric current

Answer 1

The answer is D since its electrons and not protons or atoms that are free moving through the metal.

Answer 2

D. free moving electrons in metals carry both heat and electric current