1. Conductivity in solution
Compound
Solubility
Melting Time
Conductivity in solution
Conductivity as solid

2. Main focus on conductivity
We observe 2 types of behavior among compounds:
One type of compound does NOT conduct electricity either as a solid or as a liquid
Composed of neutral accumulations of atoms we call molecules
Behavior is typical of compounds of nonmetals, but there are exceptions
The other type of compound does not conduct as a solid, but it does when dissolved
Dissolving into oppositely charged particles we call “ions” that can move freely in a solution
The presence of an electric field causes these charged particles (ions) to migrate which results in an electrical current
Behavior typical of metal and nonmetal together

3. So what’s happening at the molecular level when these compounds dissolve?

4. Conductivity of solid CuCl2 and in solution

5. Discussion
Why do the metal ions change from being soluble in solution to insoluble at the surface of the cathode?
Why do the nonmetal ions change from being soluble in solution to insoluble at the surface of the anode?