Why do ionic substances conduct electricity in water?
Background **When ionic substances dissolve in water, the ionic bonds break and the ions separate from each other. When most molecular substances dissolve in water, they remain in molecular form. However, some molecular compounds ionize in water. For example sugar dissolves in solution but does not dissociate. ***Basically, if you drop an ionic compound in water, the compound separates into free ions. Molecular compounds do not usually separate into ions.