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- Chemistry Topics: 1) Matter and Measurement, 2) Atoms, Molecules, and Ions, 3) Stoichiometry, 4) Aqueous Solutions, 5) Thermochemistry, 6) Periodic Properties, 7) Solids, Liquids, and Gases, 8) Chemical Bonding, 9) Molecular Geometry, 10) Properties of Solutions, 11) Chemical Kinetics, 12) Chemical Equilibrium, 13) Acid-Base Chemistry, 14) Thermodynamics, 15) Electrochemistry, 16) Nuclear Chemistry
Chrome
by Destiny Lane
Louis-Nicholas Vauquelin discovered the element chromium in 1797. He mixed different substances together, particularly crocoite hydrochloric acid. In 1798 he found out that he could make metal chromium by heating chromium oxide in charcoal oven. Chromium is a silver-grayish color. It’s usually shiny, and very easily polished. Most people see chromium on cars. People like to decorate their cars with what you may know as “chrome”.
- Melting point: 3465°F or 1907°C
- Density: 7.15 grams per cubic meter
- Ionization energy: 6.767 eV
- Electron Configuration: Ar 3d5 4s1
- Atomic radius: 1.85
- Specific Heat: 0.45J/gk
- Abundance: earth’s crust- p.p.m: 100
Bibliography:
"Chromium." Chemicool Periodic Table. Chemicool.com. 16 Oct. 2012. Web. 10/30/2012
<http://www.chemicool.com/elements/chromium.html>.
Steve Gagnon. http://education.jlab.org/itselemental/ele024.html
1995 - 2012 Kenneth L Barbalace http://environmentalchemistry.com/yogi/periodic/Cr.html