Salt is 100% composed of Sodium.

The statement "salt is 100% composed of sodium" is false because salt is not solely made up of sodium. Salt, scientifically known as sodium chloride (NaCl), is made up of equal proportions of sodium and chloride ions. Sodium accounts for about 40% of the total weight of salt, while chloride accounts for the remaining 60%. Therefore, salt is not 100% composed of sodium as it also contains chloride ions.