Aside from our body’s need for a regular supply of sodium, there are also other uses of the element in our lives. The most common use is in the form of table salt, which is also known as sodium chloride. read more
Sodium, as well as potassium I think, are used to create ionic "wires" that your body uses to relay nerve signals. In the everyday world, yes salt is a major form of sodium (specifically sodium chloride). Additionally sodium is used in glass to help change the properties. Sodium is used batteries to store electrical energy. read more
Sodium is mixed with chlorine and it is called sodiumchloride and is what we call salt. Also sodium in a gas state is what makes sodium lamps (like in street lights) work. See related link. read more