Another method is to clean or wipe with alkaline substances. This is because silver oxide is acidic and can be neutralized by alkaline substances. So is the ashes upstairs. It is because the ashes contain a small amount of potassium hydroxide (KOH), which is alkaline and reacts with silver oxide to remove black silver oxide. It is said that silver ornaments can also be wrapped in tin foil, sprinkled with broken characters, heated slightly on the fire, and silver can also be reduced by replacement reaction.
Related content explanation:
Silver is a chemical element with chemical symbol Ag (from Latin Argentum) and atomic number 47. It is a silver-white transition metal.
A small amount of silver exists in nature in the form of free elemental substance, mainly in ores containing silver compounds. Silver has stable chemical properties, low activity, high price, good thermal and electrical conductivity, is not easy to be corroded by chemicals, and is soft and malleable. Its reflectivity is extremely high, reaching over 99%.
Pure silver is a beautiful silvery white metal with good ductility, and its conductivity and heat transfer are the highest among all metals. Silver is one of the metals found in ancient times. Silver exists in the form of simple substance in nature, but most of it exists in the form of compound. Silver has high ductility and can be rolled into a transparent foil with a thickness of only 0.00003 cm. Silver particles with a weight of 1 g can be drawn into filaments about two kilometers long. The thermal conductivity and electrical conductivity of silver are among the best among metals.
Silver characters belong to the root family. In the root family, roots are both phonetic symbols and semantic symbols. All Chinese characters in Genzijia are related to the meaning of "boundary" and "limit". The original meaning of silver is "metal close to gold".