3History of CobaltDiscovered by George Brandt in He was a Swedish chemist who was trying to prove that the ability of certain minerals to color gas blue was due to the element of Cobalt and not to the element called bismuth, which is what many people thought then.Word origin: German kobald: evil spirits or goblin or Greek cobalos: mineIt got its chemical symbol by taking the first two letters of Cobalt
4Compounds Cobalt carbonyl-C8Co2O8 O-amyl phenol-HCo(CO)4 Cobalt metal dust-CoLead Nitrate-Pb(NO2)2
5Physical properties of Cobalt The melting point of cobalt is 1,495 degrees CelsiusThe boiling point is 2,927 degrees Celsius.The number of protons is 27, the number of electrons is 27, and the number of neutrons is 32.The density of Cobalt is 8.9g/cc
6Common uses of CobaltCobalt is used in making jet engines and gas turbine parts because Cobalt is extremely resistant to corrosion and damage even at really high temperaturesWhen Cobalt is combined with Chromium and tungsten it is used in making high speed cutting toolsCobalt is also used in making strong, permanent magnets
7Where its found in nature: Cobalt is only found in nature when it is in the chemically combined form. Cobalt is found in the minerals cobaltite, erythrite, and smaltite. It is commonly associated with ores of iron, nickel, silver, lead, and copper. Cobalt is also found in meteorites.
8Commonly found:Cobalt is found in rocks, soil, water and even in animals. Currently cobalt is not mined in the U.S. and is imported and recycled from metal. It is naturally made. Cobalt is found in the Earth’s core, but there is a very small abundance.
9State of MatterCobalt is a solid. It is a metal that is found in the 9th group and the 4th period.
10Chemical properties of Cobalt Cobalt is very, very flammable.It aggressively reacts with plain air. If exposed, it will catch fire easily.Bromine and Cobalt react through direct touch and form dibromide cobalt(II) bromide- CoBr2Cobalt doesn’t really react with nitrogen, water, and dissolves slowly in dilute sulphuric acid.