Answer
Soluble; $Ca^{2+}$ and $OH^-$
Work Step by Step
In order to figure out which elements conduct electricity, find which elements are soluble in water using solubility tables. Doing this, we find that the given substance is soluble, meaning that it will conduct electricity in water. In order to find which ions are present, look for the cations (positive ions) and anions (negative ions) in the given substances. Recall, you may have to consider polyatomic ions, which are ions with multiple atoms that you need to memorize.
