Why does silver tarnish? Detailed answer

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Why does silver tarnish? Detailed answer

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Why does silver tarnish?

Silver is a precious metal with remarkable properties. It has been known to man and used by him since the dawn of history. Silver conducts electricity and heat better than all other metals. It is the whitest metal. Silver reflects light more than other metals, which is why it is used for mirror coatings.

Silver is very easy to shape. Only gold is more accessible for processing. To increase the strength of silver, other metals are added to it. Silver of the established sample contains 92,5 percent pure silver and 7,5 percent copper.

People who use silver things do not like that it begins to darken over time. The reason for this is that silver easily reacts with sulfur and sulfur compounds and forms black silver sulfides, the coating of which we notice on silver things. Sulfur compounds are found in some foods, such as eggs. They are also found in very small amounts in the ambient air, especially when buildings are heated with coal or oil products.

In nature, silver sometimes occurs in its pure form, in the form of ingots. But more often it is found in a mixture with other metals and non-metallic substances in the composition of mineral ores.

Author: Likum A.

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A week later, the waste spread throughout the state of Washington, where Seattle is located, and individual items went beyond it. Two weeks later, some cell phones made it to Florida; two months later, printer cartridges made their way to Mexico, where they are refilled.

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