Inorganic Compounds:Water Key Chloride ion g Oxygen ⊕ Hydrogen Sodium ion 。Solvent 。Polar substances dissociate, (a)Sodium ion dissolved in water forming solutes Sodium chloride crystal (b)Chloride ion dissolved in water Figure 2.5 • Solvent • Polar substances dissociate, forming solutes Inorganic Compounds: Water Figure 2.5