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Do It
photo of a penny grab
  • a penny, and other coins
  • an eyedropper
  • water, or other liquids
  1. Set a dry penny on a table or counter top.
  2. Use the eyedropper to slowly place one drop of water at a time onto the penny. Keep count of how many drops you add.
  3. Keep adding drops until the water spills over the edge of the penny.
  4. What's the greatest number of drops you can add without spilling? What happens if you try milk, or vegetable oil, instead of water?
what happened?
Try the experiment, tell us what happens and watch DFTV for your results! Which coin holds the most water drops?

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dragonflytv PBS Kids Go!