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Transcript of Platinum
Alena Brophy 6/8 History of Platinum... Platinum was first discovered by Native Americans and Ancient Egyptians in South America. Spanish conquerors discovered Platinum in the 17th century while mining for gold in the Chocó region in Columbia. The Spanish named this element Platinum after the spanish word "platina" meaning little silver. In 1751, a Swedish assayer named Sheffer identified Platinum as the seventh existing element of that time. A French physicist, P.F. Chabaneau, was the first to acquire Platinum and used it to produce a chalice. In World War II, Platinum was used as a strategic material because of its catalytic properties. The Spanish used Platinum as a blank for coins and a source for the "New World." Properties of Platinum...
Beautiful, silver-white metal (when pure)
Density is 21.45 g/cm3
Soft and ductile
Good conductor of electricity
More properties of Platinum...
Solid at room temperature
Melting point 1,769°C
Boiling point 3,827° C
Insoluble (incapable of being dissolved) in hydrochloric and nitric acid
Dissolves when mixed as aqua regia, forming chloroplatinic acid
Some Scientific facts about Platinum... •Atomic mass:195.1
What platinum is used for today... • Platinum is used in a lot of things. It is a very unreactive metal, so it is used in electrochemistry as non-dissolving electrodes. It is used in jewelery, where it is especially useful for people who are allergic to silver because Platinum does not cause a reaction, but looks similar and will not tarnish. Platinum compounds are also used in medicine, with cisplatin being the first to be discovered, and carboplatin, a more recent anti-cancer drug. It is also used as a catalyst in many chemical reactions, such as car exhaust cleaners.
Platinum is also used in makeup and records.
• Platinum is used in jewelry, wire, and vessels for laboratory use. The metal form is used in the coating of missile nose cones and jet engine fuel nozzles. Also it can be used as a catalyst and catalytic converters on automobiles.
• Today, most Platinum used in jewelry is mined in Russia, which controls the amount minded, much like the diamond industry. A large percentage of platinum is used in jewelry making. However, it is also used in other industries such as the medical industry and the automotive industry.
This is a picture of Platinum in its pure form. Legendary jewelers such as Cartier, Faberge, and Tiffany created their timeless designs in Platinum. As with all precious metals (Gold, Silver, etc.), Platinum can be scratched. However, with Platinum, there is actually no material lost from the scratch as there is with Gold. Platinum is the rarest and heaviest of the precious metals. Some interesting facts... This shows that Platinum is a good conductor of electricity. This is a picture of a Platinum ring. This is a picture of platinum in its pure form. This is a picture of a man mining for gold. This shows Platinum as a blind for coins. This shows a Platinum chalice. This is a picture of a Platinum atom. This is a picture of a Platinum record This is a picture of makeup that is made of Platiunum Thursday,May 6, 2010 All of the Platinum ever mined would fit in the average sized living room.