Is the particles in saltwater and freshwater the same?

The particles in saltwater and freshwater differ primarily in their solute content. Freshwater consists mainly of water molecules (H₂O) with minimal dissolved substances, while saltwater contains water molecules along with a significant amount of dissolved salts, primarily sodium chloride (NaCl). This difference in solute composition affects the physical and chemical properties of the two types of water, but the fundamental structure of the water molecules remains the same.