Robert Coveny  Patrick O’Connor  Patrick Darcy
 
<ul><li>Over the centuries Cobalt has been used in an array of different areas.  </li></ul><ul><li>Ancient civilisations u...
 
 
 
<ul><li>As cobalt has strong magnetic properties, it is commonly used in high powered magnets and also in medical equipmen...
<ul><li>Cobalt is also used in broad range of other devices </li></ul>
<ul><li>Uses of Cobalt up until 1998 </li></ul>
<ul><li>Cobalt is generally found in ores combined with Arsenic, Oxygen or Sulfur. </li></ul><ul><li>Pure Cobalt does not ...
<ul><li>Cobaltite~  CoA s S  </li></ul><ul><li>Erythrite~ (Co 3 (AsO 4 ) 2 )  </li></ul><ul><li>Glaucodot~ (Co,Fe)AsS </li...
<ul><li>Alnico ~ containing iron, nickel, aluminium and cobalt.  </li></ul><ul><li>Is used to make magnets that keep their...
<ul><li>The invention of machines </li></ul><ul><li>The discovery of new elements </li></ul><ul><li>The development of mor...
 
 
 
<ul><li>Brian Knapp, B. P. (2002).  Actinium to Fluorine.  Unknown: Atlantic Europe Publishing Company Ltd. </li></ul><ul>...
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Cobalt Assignment

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year 11 chemistry assignment on the element Cobalt

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Cobalt Assignment

  1. 1. Robert Coveny Patrick O’Connor Patrick Darcy
  2. 3. <ul><li>Over the centuries Cobalt has been used in an array of different areas. </li></ul><ul><li>Ancient civilisations used cobalt in ceramics and glazes for pottery as well as in dyes. </li></ul><ul><li>Georgius Agricola, in the 16 th Century successfully supplied Cobalt as raffre </li></ul><ul><li>Cobalt was used throughout the 1800’s as a blue pigment in glassware </li></ul><ul><li>Cobalt was first isolated by Swedish chemist Georg Brant in 1735. </li></ul>
  3. 7. <ul><li>As cobalt has strong magnetic properties, it is commonly used in high powered magnets and also in medical equipment such as MRI imaging machines </li></ul>
  4. 8. <ul><li>Cobalt is also used in broad range of other devices </li></ul>
  5. 9. <ul><li>Uses of Cobalt up until 1998 </li></ul>
  6. 10. <ul><li>Cobalt is generally found in ores combined with Arsenic, Oxygen or Sulfur. </li></ul><ul><li>Pure Cobalt does not exist in nature </li></ul><ul><li>Cobalt is normally extracted as a by-product of refining other ores </li></ul><ul><li>The ore is first roasted to remove slag material, leaving a mixture of metals and oxides </li></ul><ul><li>The compound is reduced through electrolysis and heat </li></ul><ul><li>aluminium is added to sulphuric acid to dissolve the iron, cobalt, nickel </li></ul><ul><li>Lime is used to precipitate the iron, while sodium hypochlorite is used to precipitate cobalt as the hydroxide </li></ul><ul><li>The cobalt hydroxide is then heated to give the oxide, which is then reduced the metal by heating with charcoal </li></ul>
  7. 11. <ul><li>Cobaltite~ CoA s S </li></ul><ul><li>Erythrite~ (Co 3 (AsO 4 ) 2 ) </li></ul><ul><li>Glaucodot~ (Co,Fe)AsS </li></ul><ul><li>Skutterudite~ CoAs 3 </li></ul>
  8. 12. <ul><li>Alnico ~ containing iron, nickel, aluminium and cobalt. </li></ul><ul><li>Is used to make magnets that keep their magnetism even at very high temperatures. </li></ul><ul><li>Are found in loudspeakers, microphones, pick-ups </li></ul><ul><li>Paper containing Cobalt-Chloride is used in laboratories to detect water </li></ul><ul><li>Lithium- Cobalt Oxide is used in batteries </li></ul><ul><li>Cobalt Oxides are used in paints and glazes </li></ul>
  9. 13. <ul><li>The invention of machines </li></ul><ul><li>The discovery of new elements </li></ul><ul><li>The development of more effective techniques </li></ul><ul><li>development of technology </li></ul>
  10. 17. <ul><li>Brian Knapp, B. P. (2002). Actinium to Fluorine. Unknown: Atlantic Europe Publishing Company Ltd. </li></ul><ul><li>Hill, H. C. (2003). The Transition Metals 2. London - Oxford: Heinemann Library. </li></ul><ul><li>Unknown. (2005, August Wednesday). Cobalt - Wikipedia . Retrieved March Thursday, 2008, from Wikipedia: http://en.wikipedia.org/wiki/Cobalt </li></ul><ul><li>Pope, R. (2003, March 24). Cobalt . Retrieved March unknown, 2008, from Web Elements: http://web1.caryacademy.org/chemistry/ElementWebSites/cobalt/ </li></ul><ul><li>unknown. (2006, October unknown). unknown . Retrieved 03 unknown, 2008, from Cobalt—Its Recovery,Recycling and Application: http://www.tms.org/pubs/journals/jom/0610/wang-0610.html   </li></ul>

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