Gold (Au) is a metallic element with a shiny yellow color. The characteristics of this metallic element are high malleability, beauty, unique luster, high resistance to environmental factors such as weather and temperature changes.
The malleability of gold is a setting that can be made from one gram of pure gold into a sheet measuring 1 meter by 1 meter. Gold can be thin enough to let light pass through it, and even with a nail on pure gold, you can create a shape.
Due to this soft property, in various uses, by adding some other metals, they increase the resistance of gold, which also changes the color of gold.
Gold in the air and It has a good resistance to moisture and is very stable in acids. The only acid that can dissolve gold is known as Tizab Soltani (nitro-hydrochloric acid). Gold hardly enters into chemical reactions.
Gold applications
In addition to ornamental and capital use, gold has various other uses, such as in dentistry, production of colored glass, and electronic industries, and due to its high electrical conductivity, it is used in electrical wiring.