The density of gold is about 19At 32 grams of cubic centimeters, it is a relatively heavy metal. The hardness of purified gold varies depending on its purity. Pure gold is relatively soft, with a hardness value of around 2Between 5 and 3, this is because of the weak binding force between the gold atoms. However, when gold is purified to a higher purity, its hardness increases.
The process of purifying gold is mainly to improve the purity of gold by removing impurities by chemical or physical methods. This process is very important to increase the hardness of the gold. Because impurities tend to reduce the hardness of gold, these factors that affect hardness can be removed by purification.
There are many ways to purify gold, the most common of which is electrolytic purification. This method uses an electrolyte solution and an electric current in an electrolytic cell so that the gold is precipitated from the solution and the impurities remain in the solution. In this way, extremely pure gold can be obtained.
After purification, the hardness of gold will increase, but it will still be relatively low. This is because the atomic structure of gold determines its hardness. The atoms of gold are tightly arranged, but the binding force between the atoms is weak, resulting in its relatively low hardness. Despite this, purified gold is still extremely malleable and malleable, which is one of the reasons why gold is widely used in jewelry and art making.
In order to further increase the hardness of gold, it is common to alloy gold with other metals. For example, ** is a product that alloys gold with other metals, and its hardness is much higher than that of pure gold. This alloying method can not only improve the hardness of gold, but also change the color, luster and other properties of gold, making it more diverse.
The density of gold is about 1932 grams of cubic centimeters, the hardness of the purified gold will increase, but it will still be relatively low. By alloying, the hardness of gold can be further improved and its other properties can be changed. These characteristics make gold have a wide range of applications in jewelry, art, investment and other fields.