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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

American Chemical Society

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