The gold metal is also used for coinage, and has been used as standard for monetary systems in some countries.
Gold can be beaten into very thin sheets (gold leaf) to be used in art, for decoration and as architectural ornament. Electroplating can be used to cover another metal with a very thin layer of gold. This is used in gears for watches, artificial limb joints, cheap jewellery and electrical connectors.
Stanford Advanced Materials (SAM) supplies high quality Gold Crucible and Gold (Au) Evaporation Materials.
Atomic Number: 79
Atomic Weight: 196.9666
Element Category: transition metal
Gold is a soft metal with a characteristic yellow colour. It is chemically unreactive, although it will dissolve in aqua regia (a mixture of nitric and hydrochloric acids).
Most mined gold is stored as bullion. It is also, however, used extensively in jewellery, either in its pure form or as an alloy. The term ‘carat’ indicates the amount of gold present in an alloy. 24-carat is pure gold, but it is very soft. 18- and 9-carat gold alloys are commonly used because they are more durable.
The metal is also used for coinage, and has been used as standard for monetary systems in some countries.
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