All gold includes some level of copper, even 24 karat gold. This is because yellow metal is so soft and calls for a bit of copper to be extra.
Gold is a chemical element with symbol Au, atomic number 79, making it one of the higher atomic number elements.
Gold is in the purest form, it is a reddish yellow, bright, slightly, dense, soft, malleable, and ductile metal.
Chemically, gold is a changing metal and a group 11 element. It is one of the slightest reactive chemical elements and it is solid below standard conditions.
Gold often happens in free elemental form, as nuggets or grains, in veins, in rocks and in alluvial deposits.