what elements are used to make salt
Natural sea salt has little parts and pieces of other minerals besides sodium chloride. Rock salts that can be eaten are sometimes a little grayish in color because of these other minerals. Sodium (Na) and chlorine (Cl) are the two elements that make up sodium chloride. Both of these are needed for all living creatures, including humans, but they are not always eaten in the form of salt, where they are found together in large amounts.