The difference between pure gold and thousand pure gold

Pure gold and thousand pure gold are collectively referred to as pure gold. The difference is: Pure gold. A thousand parts of gold not less than 990 can be called pure gold. A thousand pure gold, with a gold content of not less than 999, can become a thousand pure gold and a thousand pure gold are purer, and the purity is higher. 99.99%; the purity of pure gold is 99.95%, and the price of pure gold is more expensive. On the market, pure gold and pure gold are collectively referred to as pure gold. The difference: pure gold. The amount of gold is not less than 990 It can be called pure gold. Thousand pure gold, with a gold content of not less than 999, can become a thousand pure gold and a pure gold with a purity of 99.99%; the purity of the pure gold is 99.95%, and the price of the thousand pure gold is more expensive, mainly on the market They are all thousand pure gold. Thousand pure gold is divided into two types, one is bare gold and the other is processed gold. The purity of gold is also called fineness in our country. Ten parts of gold contain several parts of pure gold, and it is usually called the fineness of gold. There are many ways to identify gold. Archimedes in ancient Greece used buoyancy to identify the authenticity of King Lerone II's golden crown; while the ancient Romans used touchstones to identify the purity of gold. In our country, there are the'colorful knowledge of gold' of'seven greens, eight yellows, nine purples and ten reds','gold enters fierce fire, and the color is not refined' and'gold enters fire. If there is a five-color aura, there is copper in it' and so on. This is actually the use of the flame color produced when burning gold to identify the purity of gold. We know that a variety of metals or their compounds can make the flame show a special color when burned, which is chemically called a flame color reaction. For example, the flame colors of several common metals or ions: potassium-purple, sodium-yellow, lithium-purple, barium-yellow-green, copper-green, etc. The method of using the flame color of burning gold to identify gold mentioned above is to use the principle of flame color reaction. The purity of gold is different, and the flame color is also different. Just burn the gold with a light-colored flame. Previous post: Gold and platinum Next post: The history of gold production in the United States