Answer:
Melted ionic compounds have freely moving ions while solid ionic compounds do not.
Explanation:
A melted ionic compound has freely moving ions where electrons can be transfered because the elements of the ionic compounds have broken there bonds and have dissociated into their ions. Compared to a solid ionic compound where it's still in the crystal lattice and the elements will stick in place and the ions will not move because it's in a solid state and they haven't dissocated into their ions.