Salt Salt Sodium Chloride Salt is used as a seasoning for all kinds of foods, meat curing, pickling, or koshering. Salt can also be used in water softening systems. The resin beads in a water softener become saturated with calcium and magnesium ions. In order to be recharged, the sodium ions from water softening salt is used to reactivate the resin beads so that they continue to work effectively. Salt is found in underground deposits and seawater more commonly called saltwater.
Salt crystals are in cubic form and are referred to as cubic packing of almost equal spheres.