* Ionic Compounds: Sodium chloride (NaCl) is an ionic compound. This means it's composed of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-).

* Dissolving in Water: When NaCl dissolves in water, the water molecules surround the ions and pull them apart from the crystal lattice. This process is called hydration.

* Free Ions: The hydrated ions are now free to move around in the solution.

* Conductivity: The movement of these charged ions (cations and anions) allows the solution to conduct electricity.

Think of it like this: The free ions act as charge carriers, allowing an electric current to flow through the solution.