You're right, solid CaCl₂ doesn't conduct electricity. However, it's still considered an electrolyte because it becomes an electrolyte when dissolved in water or melted. Here's why:

* Electrolytes are substances that conduct electricity when dissolved in a solvent or when melted.

* Solid CaCl₂: In its solid state, the calcium and chloride ions are tightly bound in a crystalline lattice. The ions are not free to move, preventing the flow of electrical current.

* Dissolved or Molten CaCl₂: When CaCl₂ dissolves in water or is melted, the ionic bonds break, and the Ca²⁺ and Cl⁻ ions become free to move. These mobile ions can then carry an electric current.

In summary:

* Solid CaCl₂ is not an electrolyte because it doesn't conduct electricity.

* Dissolved or molten CaCl₂ is an electrolyte because the free ions can conduct electricity.

This is why CaCl₂ is used in various applications, like de-icing roads and in battery electrolytes, where its ability to conduct electricity in solution is crucial.