Gold 79 | great-chemistry

Gold Au

Where is gold used--or where does it impact your everyday life?

Used in jewelry--it is a very soft, easily worked metal that does not tarnish

!!th grade students holding a sample of gold foil or gold leaf. Gold is extremely malleable. It can be beaten to form a very thin sheet--a millionth of a centimetre thick. Paper is 100 times thicker.

Because of its lack of reactivity, gold is used in coinage.

Here Felina dW wears a half sovereign as a ring. The half sovereing is ~4 g gold and made of 22 carat gold which is ~92% pure gold.

Samples of native gold on display at the National Museum of Natural History, Washington DC during a Chemistry One field trip.

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In Ian Fleming's James Bond book Goldfinger, the villain Auric Goldfinger had a licence tag AU 1 on his Rolls. This licence plate was seen in a Wegmans parking lot in Gainsville. Those knowledgeable in chemistry are aware that gold can form two valency (combining) states: gold I and gold III and gold's symbol is Au.

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Changing a projection TV for a plasma TV meant that new cables were required. Cables often have gold connectors because the metal is a good electrical conductor

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A core sample from Lead, South Dakota with speckles of native gold. The sample is about 10 cm (4 in) long and 0.75 cm (1 in) diameter.

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