1 thought on “What are the five methods commonly used in gold?”
Willie
1. Bite with your teeth In the awards ceremony of the Olympic Games, we will see that many athletes will bite this gold medal with their teeth, so some people laugh at whether they can bite out whether they can bite out whether they are really golden. It is not unreasonable to use teeth bite. Gold has a strong ductility, and the hardness is smaller than the teeth. Therefore, if it is a very high purity gold, you can bite with a bite with your teeth. 2. Burning with fire If the gold recycling staff will burn it on gold with a musket, the purpose of this is to remove the impurities left on the gold surface, of course, you can also check the authenticity of the gold and falseness of the gold. There is a sentence called real gold that is not afraid of fire to refine, which means that the melting point of gold is very high. Generally, it must reach thousands of degrees Celsius to make it melt. The change of gold will not be particularly large. It can also be identified by the method of weighing. The weight of the gold before and after burning to determine whether it is true gold. 3, see color gold can be judged by color. After all, the real gold can shine everywhere, but this is not true light, but refers to the surface of the surface, not particularly rough. Draw some golden patterns on the test gold stone, and then drip it with nitric acid. If these patterns have not changed, it is true gold, because gold is generally insoluble in nitric acid. This is also one of the methods to distinguish gold. It also depends on the surface. The change. 4. Use magnets everyone knows that magnets can only absorb the three metals of iron cobalt nickel. If things that are called gold can be sucking, it proves that these jewelry actually adds impurities, so The method of absorbing stone is to detect the three metals of iron cobalt nickel in gold, but if other impurities are added, iron suction stones cannot be detected. Therefore, it is very one -sided and inaccurate to detect iron suction stones. 5, 掂 The method of seeing some elderly people when testing whether it is real gold, the method is very simple, that is, it is in the hand. Only more experience can achieve this effect. For example, some people who often deal with gold have rich experience. They know whether they are real gold with their hands. This is judged by the density of gold.
1. Bite with your teeth
In the awards ceremony of the Olympic Games, we will see that many athletes will bite this gold medal with their teeth, so some people laugh at whether they can bite out whether they can bite out whether they are really golden. It is not unreasonable to use teeth bite. Gold has a strong ductility, and the hardness is smaller than the teeth. Therefore, if it is a very high purity gold, you can bite with a bite with your teeth.
2. Burning with fire
If the gold recycling staff will burn it on gold with a musket, the purpose of this is to remove the impurities left on the gold surface, of course, you can also check the authenticity of the gold and falseness of the gold. There is a sentence called real gold that is not afraid of fire to refine, which means that the melting point of gold is very high. Generally, it must reach thousands of degrees Celsius to make it melt. The change of gold will not be particularly large. It can also be identified by the method of weighing. The weight of the gold before and after burning to determine whether it is true gold.
3, see color
gold can be judged by color. After all, the real gold can shine everywhere, but this is not true light, but refers to the surface of the surface, not particularly rough. Draw some golden patterns on the test gold stone, and then drip it with nitric acid. If these patterns have not changed, it is true gold, because gold is generally insoluble in nitric acid. This is also one of the methods to distinguish gold. It also depends on the surface. The change.
4. Use magnets
everyone knows that magnets can only absorb the three metals of iron cobalt nickel. If things that are called gold can be sucking, it proves that these jewelry actually adds impurities, so The method of absorbing stone is to detect the three metals of iron cobalt nickel in gold, but if other impurities are added, iron suction stones cannot be detected. Therefore, it is very one -sided and inaccurate to detect iron suction stones.
5, 掂
The method of seeing some elderly people when testing whether it is real gold, the method is very simple, that is, it is in the hand. Only more experience can achieve this effect. For example, some people who often deal with gold have rich experience. They know whether they are real gold with their hands. This is judged by the density of gold.