What will gold change color when it meets?

When gold meets mercury, a chemical reaction called amalgam will occur, forming a new substance-gold amalgam. The color of gold amalgam is yellow and white, and it feels faded when it is attached to gold ornaments.

Gold is stable in nature and generally does not react with other substances, even at high temperatures. But will gold react with mercury to form it? White gold amalgam will change back to gold when burned.

Extended data:

According to the staff of the quality supervision and inspection station of gold and silver jewelry, gold jewelry will change color, mainly because gold and mercury contain gold, that is, gold amalgam, which is an alloy formed by the combination of mercury and gold, and the color is white. Although the nature of gold is relatively stable, once it comes into contact with elements such as mercury and lead, chemical reactions will occur. Platinum amalgam, attached to the gold ornaments, feels that the gold ornaments have faded.

Especially in summer, the phenomenon of whitening on the surface of gold ornaments is particularly frequent. The chemical properties of gold are very stable, but when it meets mercury, it will react chemically and form a white substance on the surface, but this is a normal phenomenon, and this substance is non-toxic. Nowadays, people are exposed to more and more cosmetics and daily necessities. Some cosmetics contain trace amounts of mercury. When using cosmetics, if you accidentally touch gold jewelry, the jewelry will turn white.

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