Henriette++Warnken-MASC

__ Henriette Warnken-MASC Page__ __Zinc__ Zinc is the 30th element in the periodic table of elements. It has been known since prehistoric time. it has a atomic number of 30. Zinc is also known as spelter and is a metallic chemical element. Zinc is the fourth most commonly used metal and is mined in China, Australia and Peru. Zinc is not paticully toxic and is essential for both humans and plants. The word zinc comes from a the german word zink. There are 21 known isotopes of zinc, 5 stable and 16 unstable. Fun Facts
 * Zinc is an essential mineral that is naturally present in some foods, added to others, and available as a dietary supplement.
 * Zinc was used in Rome and China more than 2000 years ago as a component of brass
 * Zinc has a melting point of 419.58°C, and a boiling point of 907°C

Zinc uses
 * vitamin tablets