Saint Patrick's Day

St. Patrick’s Day is a great time to go “green” with chemistry. Turn your house water green for the day; burn green flames; make green goo; or have a green breakfast.

  • Gold Pennies
    Make leprechaun “gold” as you learn about alloys and turn pennies from a copper color to silver to gold.
  • Fried Green Egg
    Take your St. Patrick’s Day to the extreme—turn even your breakfast food green with a red cabbage juice indicator.
  • Glowing Flower
    Give your bouquet a secret St. Patrick’s Day glow by allowing flowers to absorb fluorescent ink or tonic water.
  • Gluep—Solid or Liquid?
    Whip up a batch of green goop by adding green food coloring to the standard gluep recipe.
  • St. Patrick's Day Science
    Turn science store products like UV beads into a “blarney bead” bracelet and superabsorbent polymer spheres into “leprechaun eggs”.
  • Colored Flowers
    Use green food coloring with this classic capillary action experiment to create flowers with a St. Patrick’s Day hue.
  • The Chemistry of Green: Chlorophyll
    Why do shamrock leaves appear green to our eyes? Learn more about the inner workings of plants in this “A Calendar Year of Chemistry” video.
  • Green Chicago River
    The mix of chemicals used to turn the Chicago River green for St. Patrick’s Day is a closely guarded secret, but you can learn more about how and why they dye the river.