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Quickly washing a silver nitrate spill with liberal amounts of water may remove most of it before it stains. Once the silver nitrate has soaked into skin ...
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If you no longer like the look of the gold plating on your silver jewelry, you can learn how to remove plating from silver jewelry. Gold is a stable chemical.
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However, it exists in the salt/vinegar solution as positively charged copper ions as opposed to neutral copper metal. Nails and screws are made of steel, an alloy primarily composed of iron. The salt/vinegar solution dissolves some of the iron and its oxides on the surface of the nail, leaving a negative charge on the surface of the nail.
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