shaina bought a silver necklace for herself after a few days she observed a black coating.what can you infer from the change of colour on the necklace
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Explanation:
Silver becomes black because of hydrogen sulfide (sulfur), a substance that occurs in the air. When silver comes into contact with it, a chemical reaction takes place and a black layer is formed. ... Besides that, the natural oils that your skin produces can also react to your silver jewelry.
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The above one uis is exactly the correct answer
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