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Super Awesome Cobalt Prezi
Transcript of Super Awesome Cobalt Prezi
Reacts with most acids to produce hydrogen gas
Doesn't react with water at room temperature Silver-white colored
Brittle Solid at room temperature
Melts at 1495 degrees Celsius (2723 Fahrenheit)
Boils at 2930 degrees Celsius (5301 Fahrenheit) 27 protons
2 valence electrons
Atomic Mass: 58.93
Atomic Number: 27
59 (more common)
58 Cobalt is in the ninth family and belongs to the fourth period. It is classified as a transition metal. Cobalt is most commonly found as a solid. Discovered by Swedish chemist George Brandt in 1735
Discovered in Sweden
George Brandt thought that it was not bismuth that turned glass blue, which was the common belief of the time, but an undiscovered element. Brandt was correct in his hypothesis and came to call that element cobalt. This is cobalt on
the periodic table This is an atom
of cobalt. Cobalt is extracted by using heat from a blast furnace and a metal reducing agent, such as carbon, to change the ore's oxidized state. The carbon removes the ore's oxygen and leaves the metal cobalt. The cobalt is taken out to obtain 99.9 percent pure cobalt. Bibliography •www.webelements.com/cobalt •www.periodictable.com/Elements/027/index.html •www.chemicool.com/elements/cobalt.html •www.chemicalelements.com/co.html •www.lenntech.com/periodic/elements/co.htm•www.education.jlab.org/itselemental/ele027.html •www.wanttoknowit.com/uses-of-cobalt/ •www.chemistryexplained.com/elements/A-C/Cobalt.html#b