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Chromium (Jeff Jansen)

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Chromium (Jeff Jansen)

  1. 1. By: Jeff Jansen
  2. 2.  Chromium Atomic Number: 24 Atomic Mass: 51.9961 Group: 6 Period: 4 Color: silvery metallic Founder: Louis- Nicholas Vauquelin in 1797 Location: Peru Greek word for colour is ‘chroma’
  3. 3.  Founder of Chromium and Beryllium Started with crocite and used HCl to precipitate the chromium oxide then heated to obtain the metal. Analyzed emerald in Peru and realized the color in it is chromium
  4. 4.  Solid at room temperature Silvery metallic color Melting point: 2180 K (1907 C or 3465 F) Boiling point: 2944 K (2671 C or 4840 F) Density: 7.15 g/cm2 Major isotopes: Cr 50, 52, 53, 54 Uses: chrome plating, paints, hardens steel, armor plates, safes, ball bearing, cutting tools
  5. 5.  Cr2O3- green pigment K2Cr2O7- tanning leather PbCrO4- yellow pigment Used for fire brick molds due to its high melting point
  6. 6. Chrome hardened Armor Plate Chrome oxide green steel (paint)Chromeplated safe Chrome ball bearings
  7. 7.  Element is found in South Africa, India, Kazakhstan, Zimbabwe, Finland, Iran, Brazil The chromite ore is obtained from mining Price of chromium: $6.27 per pound
  8. 8.  Candian Nickel 1952- made of 1952 steel covered in chrome Chromium is antiferromagnetic below room temperature. Becomes Paramagnetic above 38 degrees Celsius Chromium is the 21st most abundant element in the Earths crust. It is present at a concentration of approximately 100 ppm. Maybe found in the same vicinity as diamonds
  9. 9.  http://www.webelements.com/chromium/ http://www.chemicool.com/elements/chromium.html#Abundance http://www.google.com/imgres?q=chromium+element&um=1&hl=en&biw=1280&bih =631&tbm=isch&tbnid=nIrDbmhlnVqr2M:&imgrefurl=http://web.as.uky.edu/Chemist ry/Faculty/Bachas/Genealogy/genetable.html&docid=53HtGKRZUFr_aM&imgurl=htt p://web.as.uky.edu/Chemistry/Faculty/Bachas/Genealogy/vauquelin.jpg&w=327&h =432&ei=- DvFTvSyJIvVgAfM1OH2Dg&zoom=1&iact=hc&vpx=1038&vpy=227&dur=4362&hovh= 258&hovw=195&tx=158&ty=163&sig=110126848219894261128&page=1&tbnh=124&tbn w=111&start=0&ndsp=21&ved=1t:429,r:20,s:0 (image Founder) http://www.google.com/imgres?q=chrome+ball+bearing&um=1&hl=en&biw=1280&bi h=631&tbm=isch&tbnid=WExbZINvwFFBFM:&imgrefurl=http://www.v- sheng.com/Bearing%2520%26%2520Ball/bearing/index10.htm&docid=p6Koosf7XEKV uM&imgurl=http://www.v- sheng.com/Bearing%252520%2526%252520Ball/bearing/images/steelball1.jpg&w=400 &h=276&ei=KUHFTuKSNcHDgQf705DUDg&zoom=1&iact=hc&vpx=170&vpy=149&d ur=155&hovh=186&hovw=270&tx=145&ty=108&sig=110126848219894261128&page=1& tbnh=129&tbnw=173&start=0&ndsp=18&ved=1t:429,r:0,s:0 http://www.recycleinme.com/scrapresources/DetailedPrice.aspx?cat=Other%20Metals &subcat=Chromium
  10. 10.  http://www.google.com/imgres?q=chromium&um=1&hl=en&sa=N&bi w=1280&bih=631&tbm=isch&tbnid=JRiVN8ipS5UyEM:&imgrefurl=http: //en.wikipedia.org/wiki/Chromium&docid=z6Op8d0C10xtHM&imgur l=http://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Chr omium_crystals_and_1cm3_cube.jpg/250px- Chromium_crystals_and_1cm3_cube.jpg&w=250&h=149&ei=QTzFTqGm JIiygweioenxDg&zoom=1&iact=rc&dur=181&sig=11012684821989426112 8&page=1&tbnh=83&tbnw=140&start=0&ndsp=21&ved=1t:429,r:0,s:0&tx =52&ty=50 http://www.google.com/imgres?q=chrome+plated+safe&um=1&hl=en &biw=1280&bih=631&tbm=isch&tbnid=XZFjX9Ij1Ro49M:&imgrefurl=htt p://www.wilsonsafe.com/acatalog/high_security_safes.html&docid=Y wvzF1HO5vsmKM&imgurl=http://www.wilsonsafe.com/acatalog/relia nce_tn.jpg&w=125&h=133&ei=xkDFTrKpFsStgwemuNCHBw&zoom=1& iact=hc&vpx=503&vpy=337&dur=3482&hovh=106&hovw=100&tx=78&t y=99&sig=110126848219894261128&page=1&tbnh=106&tbnw=100&start =0&ndsp=21&ved=1t:429,r:9,s:0 http://chemistry.about.com/od/chromium/a/10-Chromium-Facts.htm
  11. 11.  http://www.google.com/imgres?q=chromium+paint&um=1&hl=en&sa =N&biw=1280&bih=631&tbm=isch&tbnid=z_E2xsplQlFwAM:&imgrefur l=http://www.made-in-china.com/showroom/ruifang1983/product- detaileqjJHREAmaYx/China-Chromium-Oxide- Green.html&docid=5JiWsgcPHCZoAM&imgurl=http://image.made-in- china.com/2f0j00vCyTWgaYTUrQ/Chromium-Oxide- Green.jpg&w=768&h=512&ei=dD7FTq7zFcrYgQf_wcmGDw&zoom=1&i act=hc&vpx=353&vpy=132&dur=4728&hovh=183&hovw=275&tx=162&t y=125&sig=110126848219894261128&page=1&tbnh=130&tbnw=174&start =0&ndsp=18&ved=1t:429,r:1,s:0 http://www.google.com/imgres?q=chrome+hardened+steel&um=1&hl =en&sa=N&biw=1280&bih=631&tbm=isch&tbnid=94Bf4qHIioeCLM:&im grefurl=http://japan.webike.net/categories/m410/3000_3100.html&doci d=JKzH_PWhQ- tUGM&imgurl=http://118.151.169.117/jp_images/images/catalogue/11 526/60486s.jpg&w=140&h=140&ei=uz_FTsDIH8afgwePwuXUDg&zoom =1&iact=rc&dur=4&sig=110126848219894261128&page=2&tbnh=112&tbn w=112&start=20&ndsp=21&ved=1t:429,r:0,s:20&tx=101&ty=83 http://periodictable.com/Elements/024/index.html

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