D. All of them
Explanation: In a solid state, NaCl and Au are good conductors of electricity as they have free ions or electrons that can carry electric current. In a liquid state, NaCl is also a good conductor of electricity for the same reason. H2O does not conduct electricity in its pure form (s), but can conduct when it contains dissolved ions or impurities.
Which substance(s) will be good conductors of electricity?
I. H2O (s)
II. NaCl (s)
III. NaCl (l)
IV. Au (s)
Responses
A I and II only
B III and IV only
C II and III
D All of them
1 answer
1 answer