Element Sheet - Kiley Salomon Group: Captain Chemistry...

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Kiley Salomon Group: Captain Chemistry February 22, 2008 ELEMENT INFORMATION SHEET Basic Information 3 Discovery Information 4 Sir Humphry Davy discovered potassium on October 6, 1807 and made his discovery public on November 19, 1807 at the Royal Society of London. For many centuries up until then, people were familiar with a substance called potash, which was a compound that was found in wood ashes. During the 1700s, chemists determined the compound contained an element they hadn’t seen before, but couldn’t figure out how to break it down. It was Davy who finally figured out how to do this by melting a sample of caustic potash (KOH) and running an electric current through it. He named the new element “potassium” after its much older name “potash”, making it the first metal isolated by electrolysis. Physical Properties Table 1. Physical properties for element potassium. Physical Property Value 2 Standard State Solid (metal) Color Silvery-white Melting Point (K) 336.8 Boiling Point (K) 1047 Specific Heat (@ 20°C J/g mol) 0.753 Density (g/cc) 0.856 Name of Element Potassium
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This note was uploaded on 05/27/2008 for the course ISP 207 taught by Professor Hironaka during the Winter '08 term at Michigan State University.

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Element Sheet - Kiley Salomon Group: Captain Chemistry...

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