Chemically, table salt consists of two elements, sodium (Na) and chloride (Cl). Neither element occurs separately and free in nature, but are found bound together as the compound sodium chloride. Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt has over 14,000 known uses. Manufacturing textiles, glass, rubber, leather, even drilling oil wells, depends on salt. Common uses of salt include seasoning of food, deicing for safe roads, softening hard water, and food preservation.
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