Gold properties



Contents

  • 1 gold
    • 1.1 Gold properties
    • 1.2 Gold Uses
    • 1.3 Where Gold is

gold

Gold is a mineral of wealth and money, and it is a chemical element symbolized by the letters Au, which is relative to its name in Latin, and people use it as a monetary unit of deal, and it is found in nature in the form of shiny granules inside the rocks, or in the bottoms of rivers, and in the form of veins in the ground, and has been discovered The largest mass of gold in Australia in 1896 AD, weighing 2.280 ounces.

The process of purification of gold is accomplished by separating the dirt, silt, and impurities from it by strong water currents, where sand and alluvials are removed from it, which keeps the gold minutes in place, or it may use mercury to melt the gold without sand and impurities, and then rid the gold of mercury through the process of distillation of mercury .

Gold properties

Gold is distinguished from other minerals by many physical and chemical properties, due to its chemical nature, as it carries the atomic number (79), and the atomic mass (196.967), and among its most important properties are the following:
  • Gold is characterized by smoothness.
  • It is distinguished by luster.
  • Low erosion.
  • High density.
  • It is a good electrical conductor.
  • It is a good conductor of heat.
  • Scalable, road, and configurable.
  • The melting point of gold is one thousand sixty-four degrees Celsius.
  • The boiling point of gold is two thousand eight hundred and fifty six percent.
  • Gold does not react with air, water, heat, or moisture as inactive.
  • Dissolved in royal water, which is an acid mixture of hydrochloric and nitric.
  • It is dissolved in sodium thiosulfate solution with oxygen.
  • Dissolves in solutions of cyanide and alkaline elements.

Gold uses

The availability of gold for the Pharaohs led to its use in making the sarcophagi of kings and some tools such as carts, as they used the gold mixture with some cosmetic ointments to make masks for the skin as they made the mask of Tutankhamun, but these days gold constitutes the origin of the monetary material used by the International Monetary Fund and the Bank of Settlements International, and gold has other uses in:
  • The field of dentistry, such as dental dressings and fillings.
  • Manufacture of jewelry and decorations.
  • Treatment of rheumatism and bone infections, as it is manufactured so-called gold solution.
  • Treatment of some types of cancer, as used in that radiant gold No. (198).
  • Medicines packaging.
  • The electronics and microelectronics industry.

Gold locations

Gold is found in nature in two states: either as primary deposits, or in river pools as transported deposits, and these are the most important global regions rich in this shiny mineral:
  • Nevada.
  • Alaska.
  • California.
  • Ural Mountains.
  • South Dakota.
  • Ontario, Canada.
  • The Rand region of the Transvaal of the South African Union, which produces nearly forty percent of the world's gold production.