* Strong Electrolytes: These are substances that completely dissociate (break apart) into ions when dissolved in water. This means that when you add a strong electrolyte to water, it essentially separates into its constituent ions.

* Ions: These are charged particles that can conduct electricity. The free movement of ions in a solution is what makes the solution conductive.

* Molecules: These are neutral groups of atoms held together by chemical bonds. While some molecules can become ions when dissolved, strong electrolytes primarily exist as ions in solution.

Examples of Strong Electrolytes:

* Salts: Sodium chloride (NaCl) dissociates into Na+ and Cl- ions in water.

* Strong Acids: Hydrochloric acid (HCl) dissociates into H+ and Cl- ions in water.

* Strong Bases: Sodium hydroxide (NaOH) dissociates into Na+ and OH- ions in water.

In summary: Strong electrolytes are characterized by their complete dissociation into ions when dissolved in water, leading to solutions that are excellent conductors of electricity.