Gold: the metal that conquered the world

Gold metal  chemical element Au, atomic number 79, oxidation state 0, +1, +3, +5. Gold metal  Soft, classified as a noble metal, its primary color is yellow, although there are a wide range of varieties. This material's melting point is 1064 degrees Celsius. Gold metal  belongs to the sixth period of the periodic table of chemical elements of D.I. Mendeleev and is a simple substance.

Gold, some details

Gold  It is found in soil in trace amounts. A ton of rock contains an average of 4 milligrams of the precious metal. Gold can be found in placer or ore form. For example, ore gold is found in quartz as small, golden grains. It is found in quartz rocks as small inclusions, and sometimes as large, golden veins. In placer form, gold is found in gold  It is found in disintegrated quartz rocks. This metal is also extracted from rare minerals, where it occurs in the form of chemical compounds. Modern gold analysis methods allow it to be found even in the smallest quantities. Native gold gold  contains a large number of impurities, often in large quantities.

Gold, properties of the metal

Gold metal properties  has a density of 19300 kg/m3³It is fairly resistant to a wide range of chemical influences, does not oxidize in air, is unaffected by acids, and dissolves in a concentrated mixture of nitric and hydrochloric acids, as well as in an alkaline solution of sodium and potassium cyanide. The metal also dissolves in mercury, forming a low-melting alloy. At temperatures of 300–400 degrees Celsius, it reacts with fluorine. Gold metal properties  It is characterized as plastic, so it can be forged quite well. All varieties of gold  They are good conductors of heat and electricity. This metal is quite heavy, which allows for its high-quality extraction from the rock. Since gold is highly malleable, it can be easily forged down to micrometers and becomes translucent.

Gold, characteristics

Gold characteristics has the following:

• Brinell hardness 20;
• specific heat of evaporation 340 kJ/mol;
• molar volume 10.2 cm³/mol.

Gold characteristics Known as a malleable and soft metal, gold is widely used for smelting alloys. These compounds are stronger and more wear-resistant, so combining gold with other precious metals gives it a unique beauty and practicality.

The main types of gold

Although it is commonly believed that gold is only a yellow, bright metal, in fact there is what is called the gold group or varieties of goldThe main components of this group include 10 metals. This website provides a description and basic classification of the types of this precious metal. For user convenience, all types are listed:

• black gold;
• blue gold;
• purple gold;
• rose gold;
• red gold;
• brown gold;
• green gold;
• yellow gold;
• blue gold;
• white gold.