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St. Patrick's Day Science - Making Gold Pennies

Read the full experiment at http://www.stevespanglerscience.com/experiment/gold-pennies Theres just something strange about a gold penny. First of all, gold pennies dont exist unless youre a 20th-century alchemist who knows something about the science of alloys. Modern day alchemists, cleverly disguised as chemistry teachers, often share the secret of making gold pennies. Students take home an unforgettable lesson in alloys and a keepsake penny that can never be put back into circulation even though its a gold penny, the US Treasury has a little problem with people buying something with gold pennies.
Length: 02:32

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