Sodium comes from the Latin word natrium where is where it gets it symbol Na. In English sodium comes from the word soda which means headache remedy. It was discovered in England by Sir Humphrey Davy
Sodium is a silvery white solid at room temperature, but it is a very soft solid. Melting Point: 97.72˚C. Boiling Point: 883˚C. Density at 293 K: 0.971 g/cm3 Because sodium is an alkali metal, it is a good conductor of heat and electricity.
Sodium-23 is the only naturally occurring isotope of sodium. There are six known radioactive isotopes of sodium. The two major radioactive isotopes are sodium-22 and sodium-24.
Sodium 22 and 24 are used in medicine. • They are used as tracers to follow sodium in a person’s body. • The radiation given off by the isotopes are followed by detectors. Sodium-24is also used to test leaks in underground oil pipelines. • Sodium-24 is added to the pipelines and when the oil leaks, so does the sodium-24 which can easily be detected by radiation detecting instruments.
Sodium is not found free in nature because it is highly reactive. It is very abundant in the sun and stars, and is even found in the earth’s crust. Sodium can be obtained by passing an electric current through molten NaCl. Cost: $25 per 100 g.
Pure sodium has very few uses because it is such a reactive element. Metallic sodium is used to manufacture organic compounds. It is also used to remove impurities from molten metals. Metals can be separated from compounds using sodium. It is used as a heat exchange medium in nuclear power plants. The heat in sodium converts water to steam which generates electricity.
Sodium is used to make artificial rubber. It is used in making light bulbs. Sodium is converted to gas and injected into the light bulb. An electric current causes sodium vapor to give off a yellowish glow. Sodium vapor lamps are popular today because they do not produce as much glare as ordinary lights.
Sodium chloride- seasoning, preservative, synthesis of other sodium compounds Sodium hydroxide- film, rayon, soaps, paper, and lye Sodium carbonate-glass making, paper production, textile manufacturing, soaps, and detergents Sodium bicarbonate-baking soda Sodium sulfate-cardboard and Kraft paper
Sodium silicate- Soaps, detergents, adhesives, water treatment, and bleaching and sizing textiles. Sodium borate-borax Monosodium glutamate-MSG
Sodium is the most abundant alkali metal. Sodium is stored in oil to prevent its reaction with air. Pure sodium mixed with water creates a violent reaction. So much energy is released that the sodium melts, turns into a ball, and the heat causes the hydrogen gas to explode, and the sodium ball sizzles across the water. http://www.youtube.com/watch?v=92Mfric7JU c&feature=related