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How to Spot Fake Metals With Acids

Watch as the American Chemical Society employs some acid know-how to sort real gold from its imposters

by American Chemical Society
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Acids are reactive, with even weak acids like vinegar interacting with other materials to wow students. But strong acids can really put on a show. For example, aqua regia, or royal water, is a mixture of two strong acids—hydrochloric and nitric acids—that can dissolve gold, a noble metal. This reaction can be put to use. Watch as Reactions employs some acid know-how to explain a chemistry detective story to sort real gold from its imposters:
Video Source: The American Chemical Society