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Au

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on 3 March 2014

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Transcript of Au

Metalloid
The Worlds 10 most prolific gold fields
Witwatersrand(Johannesburg, South Africa)
Carlin Tred(Navada, US)
Irian Jaya(Indonesia)
The super pit(Australia)
Yanacocha(Peru)
Gold Country(California, US)
Homesteak Mine(South Dakota, US)
Lihir Island(Papa New Guinea)
Dawson City(Yukon Territory, Canada)
Hishikari Mine(japan)
USES
Electronics, Jewelry, Coins
Gold (Au)
Symbol: Au
Atomic Number: 79
Atomic Mass: 196.96655 amu
GOLD
Au
Not sure who discovered gold, it was discovered before written records. Dates back to 6200 years ago.
Most Common Isotope?
197Au
Period: 6 Group:11
Solid
Melting Point: 1064.18 C
Boiling Point: 2850 C
Density: 19.3g/cm3

The name gold originated from the Old English Anglo-Saxon word 'geolo' meaning yellow
Gold has been discovered on every continent on earth.
The olympic medals awarded in 1922 were made entirely from gold, currently the gold medals must be covered in 6g of gold.
Gold is the only metal that is yellow or "golden". Other metals may develop a yellowish color, but only after they have oxidized or reacted with other chemicals.
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