I think oxygen
No, not that i know of, gold is highly unreactive.
Gold does not react with other chemicals because it is the least in the reactant table and also known as The Humble Metal .
Gold is a stable element because of its unique electronic configuration, which means it does not readily react with other elements or chemicals like oxygen and water. Additionally, gold has a high density and melting point, which contribute to its stability and resistance to corrosion.
Physical properties change when chemicals combine because when you mix chemicals the physical properties changes it identity.
You could separate gold from other metals by gravity, by melting, or by chemical means.
Gold is considered a 'noble' metal. This is because it will not easily combine with other elements
When chemicals combine with water vapor in the air, they can form acidic compounds such as sulfuric acid or nitric acid. These compounds can contribute to acid rain and other forms of environmental pollution.
To form new substances.
Chlorine and hydration
koti
It is initially done manually. In that you pick out the gold from the other rocks. After that there are various acids and chemicals that dissolve the gold and separate it from the other material
Gold is very inert, and unreactive to other chemicals so table salt should not affect gold at all. FYI to get gold out of ore you use seriously strong acids that oly attact the ore and leave the gold intact.