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If asked to choose which would be most attracted by a magnet: a penny, a dime or a dollar bill, most students would probably choose the penny or the dime, but they would be wrong! That’s because there is more iron in a dollar bill than there is in either the penny or the dime! What is it doing in there and is it possible to extract it?


  • Mixtures
  • Magnetism
  • Chemical Equations