Irene_HistoryofSodium

History of Sodium
Sodium is the seventh most common element in the Universe and comprises in the Earth's crust.It's not usually found in nature but in compounds like sault.The sodium chloride is known as sault and it always been used with food and to preserve food. It was been known since the antiquity by the people from Egypt and Mesopotamia which used that with food,as a cleaning agent and to make glasses and pottery.In 1758,chemists were close to isolating the sodium metal but was Sir Humprey Davy in England in 1807.He tried to isolate sodium metal using electrolysis and he discovered sodium hidroxide.The symbol Na takes name from the latin word natrium and the Egyptian natrum.Now we call it soda so from this word it takes the name sodium.Now we use sodium-vapor lamps to illuminate the street and it's also vital to regulate a lot of body process.For all these reason sodium remains one of the most used elements.