1 thought on “How will gold touch water every day”
Miguel
Gold is a very rare precious metal. Because of its unique physical properties, if it is frequently contacted with water, it will have an impact on its internal structure and shape. It is recommended not to be frequently touched with water the discoloration or fading of gold jewelry is closely related to human sweat. 99% of human sweat is water, and about 1% is waste and harmful substances in human body, such as chlorine, lactic acid, urea ammonia, etc when these substances come into contact with silver and copper in gold jewelry, they will produce chemical reactions, producing silver chloride and copper sulfide, and presenting dark black chemical salts this chemical salt often falls from gold jewelry, polluting the wearer's skin, leaving a very obvious black stain on the skin extended data: gold is the elemental form of the chemical element gold (AU), which is a soft, golden yellow, corrosion-resistant precious metal. Gold is one of the rare, precious and highly valued metals in the world, gold is generally measured in ounces. In ancient China, the unit of gold was "Liang", which is a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communications, aerospace industry and other sectors the chemical symbol of gold is Au, and the financial English code is XAU or gold. The name of Au comes from a story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn cleaning method 1. To protect the luster of gold jewelry, you can apply a thin layer of nail polish on it 2. If there is a black silver film on the surface, use 2G of salt, 7g of baking soda, 8g of bleaching powder and 60ml of water to prepare a "gold ware cleaner". Put the gold jewelry in a bowl and pour the cleaner. After 2 hours, take out the gold jewelry, rinse it with water (preferably not hard water), bury it in wood chips and dry it, and then wipe it with a soft cloth 3. For the ring set with gems, roll a piece of cotton with a popsicle or matchstick. After wetting it in the mixture of toilet water and glycerin, scrub the gems and their frames, and then polish the ring with a flannel cloth. Never scrape with sharp objects such as blades 4. Salt and vinegar are mixed into a cleaning agent, which can be used to wipe pure gold jewelry and keep it fresh for a long time 5. The luster can also be restored by wiping with toothpaste or scrubbing with hot concentrated rice soup 6. It can be scrubbed with ammonia to identify adulteration 1. Gold has white bright spots cut the gold bar or gold jewelry with a material shear, and observe its section with a magnifying glass. If there are white bright spots, because gold and iridium cannot be fused together, it indicates that iridium is mixed in the gold 2. Measure the specific gravity first measure the weight of a piece of pure gold bar with a balance, then put the gold bar into a measuring cup, and pour water to submerge the gold bar. Then put the detected gold bar into the measuring cup and observe whether the scale of the water rises or falls. If there is any change, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air inside the gold jewelry 3. Real gold is not afraid of fire put the gold bar or gold jewelry on the fire for a while to observe its change. Because iridium will combine with oxygen in the air to produce oxidation reaction, gold bars with insufficient purity will turn gray; And pure gold will be bright red after baking. However, this method may cause some damage to jewelry
Gold is a very rare precious metal. Because of its unique physical properties, if it is frequently contacted with water, it will have an impact on its internal structure and shape. It is recommended not to be frequently touched with water
the discoloration or fading of gold jewelry is closely related to human sweat. 99% of human sweat is water, and about 1% is waste and harmful substances in human body, such as chlorine, lactic acid, urea ammonia, etc
when these substances come into contact with silver and copper in gold jewelry, they will produce chemical reactions, producing silver chloride and copper sulfide, and presenting dark black chemical salts
this chemical salt often falls from gold jewelry, polluting the wearer's skin, leaving a very obvious black stain on the skin
extended data:
gold is the elemental form of the chemical element gold (AU), which is a soft, golden yellow, corrosion-resistant precious metal. Gold is one of the rare, precious and highly valued metals
in the world, gold is generally measured in ounces. In ancient China, the unit of gold was "Liang", which is a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communications, aerospace industry and other sectors
the chemical symbol of gold is Au, and the financial English code is XAU or gold. The name of Au comes from a story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn
cleaning method
1. To protect the luster of gold jewelry, you can apply a thin layer of nail polish on it
2. If there is a black silver film on the surface, use 2G of salt, 7g of baking soda, 8g of bleaching powder and 60ml of water to prepare a "gold ware cleaner". Put the gold jewelry in a bowl and pour the cleaner. After 2 hours, take out the gold jewelry, rinse it with water (preferably not hard water), bury it in wood chips and dry it, and then wipe it with a soft cloth
3. For the ring set with gems, roll a piece of cotton with a popsicle or matchstick. After wetting it in the mixture of toilet water and glycerin, scrub the gems and their frames, and then polish the ring with a flannel cloth. Never scrape with sharp objects such as blades
4. Salt and vinegar are mixed into a cleaning agent, which can be used to wipe pure gold jewelry and keep it fresh for a long time
5. The luster can also be restored by wiping with toothpaste or scrubbing with hot concentrated rice soup
6. It can be scrubbed with ammonia
to identify adulteration
1. Gold has white bright spots
cut the gold bar or gold jewelry with a material shear, and observe its section with a magnifying glass. If there are white bright spots, because gold and iridium cannot be fused together, it indicates that iridium is mixed in the gold
2. Measure the specific gravity
first measure the weight of a piece of pure gold bar with a balance, then put the gold bar into a measuring cup, and pour water to submerge the gold bar. Then put the detected gold bar into the measuring cup and observe whether the scale of the water rises or falls. If there is any change, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air inside the gold jewelry
3. Real gold is not afraid of fire
put the gold bar or gold jewelry on the fire for a while to observe its change. Because iridium will combine with oxygen in the air to produce oxidation reaction, gold bars with insufficient purity will turn gray; And pure gold will be bright red after baking. However, this method may cause some damage to jewelry