Definition of gold metal
Gold is one of the most important and precious metal chemical elements. Its general characteristics are that it bears the symbol Au, and the atomic number 79 is yellow. It is characterized by luster, softness . It also has a high density that exceeds many other minerals. Gold is one of the most precious metals. Gold is called when it is in its natural state in the form of powdered or crumbs, as is the case for silver. Silver is called when it is in its natural state in the form of powder or crumbs.
Gold site in the periodic table of elements
Gold is the third element of the eleventh group in the middle of the periodic table of the elements, which is closest to the right side of the periodic table. This group is one of the groups of transition metal elements. This group has elements other than gold, ), Copper (Cu).
Uses of gold, and places of nature
Gold is one of the precious and rare elements. Gold is found in nature in the form of granules or crumbs. In this case, it is called “taper”, or it may be found in the form of nuggets or large lumps. Where rocks, sand and gravel are present in the river bottoms, Also in the ground, gold when discovered or be pure , or be mixed with some other metals, is often discovered mixed with copper metal or lead.
Gold has many uses, it is used in the manufacture of precious jewelry and jewelry, and gold also some medical uses, and was used in the past and silver coins.
How gold was discovered؟
Since ancient times, man has discovered many minerals, such as gold, silver, iron, and copper. Gold is one of the earliest minerals known to man in early human history. Some historians say that man discovered it in the Neolithic period It began in the year 10,200 BC. The method of human discovery of gold is unknown, and may have been discovered by chance.
The gold was famous for many historical human civilizations, including: Pharaonic civilization in Egypt, the Pharaohs knew gold, and dug many of the mines and extracted from them, and then manufactured and formed, and introduced in many industries, and other ancient human civilizations that Known for the use of gold: Mesopotamia civilization in Iraq.