Embed Size (px)
Citation preview
TUNGSTEN: 74Emily Lambert, Jesse Mitchell, Morgan
McKnight, Haylee Downton
History
o Peter Woulfe gathered the existence of Tungsten from his analysis of wolframite in 1779.
o Tungsten was isolated as tungstic oxide by Carl W. Scheele from scheelite in 1781. But he did not have a reason furnace to reduce the oxide to metal.
o Tungsten was lastly isolated in 1783 by two chemist and brothers in Spain, Fausto and Juan Jose de Elhuyar. They did this by reduction of acidified wolframite with charcoal.
o The name “Tungsten” means heavy stone.
Historical Facts
o The word “Tungsten” comes from the words “Tung” and “Sten”. Those are Swedish words. They mean heavy stone.
o Tungsten carbide was used by Osram, a German company. This was used in place of diamond drawing dies.
o During World War 2, Tungsten carbide was needed for its weaponry production.
Used throughout history
o Tungsten has been used by porcelain makers in China more than 350 years ago. They integrated a peach color in their designs by using a tungsten pigment.
o During World War 2
The Element :Tungsten
Symbol: W Atomic Number: 74 Atomic Mass: 183.84 amu Color: silver white
Physical & Chemical Properties
Boiling Point: 5660°C Melting Point: 3410°C At room temperature it is a solid. Its classified as a metal. It conducts electricity. When mixed Thorium it becomes radioactive, and is
dangerous to anyone who is exposed to it. Also has the ability to shield radiation.
Chemical & Physical Properties Cont.
The dust of tungsten is flammable. The dust of tungsten is explosive. It does corrode if temperatures are above 400°C. Tungsten reacts with halogens- fluorine and chlorine. Tungsten doesn’t react with air, water, acids, and bases.
Uses
o Tungsten has/are used for…• Filaments for incandescent light bulbs, fluorescent light
bulbs, and television tubes• Jewelry• Used as a target for X-ray production• Heating elements in electric furnaces• Parts of spacecraft and missiles
Facts: Symbol is from Wolfram. Latin- Wolframium Swedish- Volfram French- Tungstene Portuguese- Tungstenio Has the highest melting point and boiling point of all metals. Has the lowest vapor pressure. Western Europe owns 30% of the worlds Tungsten, North
America and China own 25%, Japan owns 13%. The remaining resources are in smaller countries.
Wolframite means “the devourer of tin”. Pure Tungsten is soft and Tungsten Carbide is extremely hard.
Mole Jokes
o What did the mole say when his friends crashed the party? The mole the merrier!o What kind of chip dip do you use on mole day? GuacaMOLe!o Why is Avogadro in love with Cindy Crawford? She's his favorite super-mole-dle (and she has a mole).o How much does Avogadro exaggerate? He makes mountains out of mole hills
CITESo Advameg, Inc. "Chemistry Explained." Tungsten, Chemical Element. N.p., 2014.
Web. 16 Oct. 2014o Cannon Jennifer. ehow.com. Ehow. nd. Web. 14 Oct. 2014.o chemicool.com. Chemicool. nd. Web. 14 Oct 2014.o education.jlab.org. Jefferson Lab. nd. Web. 14 Oct 2014.o Elderfield & Hall, Inc. "Thoriated Tungsten Radioactivity." Pro-Fusion. N.p., n.d.
Web. 16 Oct. 2014o Gagnon, Steve. "The Element Tungsten." It's Elemental -. Jefferson Labs, n.d.
Web. 16 Oct. 2014o Live Science Staff. livescience.com. Livescience. 19 Aug 2013.Web. 14 Oct 2014.o purdue.edu.com. Purdue Owl. nd. Web. 14 Oct 2014. o rsc.org. Royal Society of Chemistry. nd. Web. 14 Oct 2014.o Tungsten World. "Tungsten Rings Hammer Test Vs. Titanium Rings Vs. Gold Rings
- Tungsten World Reviews." YouTube. YouTube, 15 Apr. 2009. Web. 16 Oct. 2014o Winter, Mark. webelements.com. WebElements. nd. Web. 14 Oct 2014.
