Get Messy with Chemistry

See what happens when you drop Mentos into a bottle of diet soda!


  • Mentos–Diet Coke Geyser
    Stand back! Prepare for a soda eruption in 5… 4… 3… 2… 1…
  • Mentos Geyser Tube
    Ready to try the Mentos–diet soda geyser, but not ready to risk getting soda all over yourself? Try a pre-made drop tube, plus three tube caps for different soda sprays.
  • Make Your Own Mentos Geyser Tube
    Got some time and feeling handy? Create your own tube to drop Mentos into soda bottles.
  • Mythbusters: Soda and Mentos
    Mint or fruit flavor? The Mythbusters investigate which produces more bubbles in this “mini-myth” video.
  • Extreme Mentos & Diet Coke
    101 two-liter bottles of Diet Coke + 523 Mentos = extremely messy chemistry. See the video that started it all.
  • Soda–Candy Explosions
    What’s really going on when you drop a Mentos candy in soda? Even science researchers want to find out!


Ottawa Township High School, Ottawa, IL

Blast off! Create a rocket using an Alka–Seltzer tablet and a film canister.

Stir up some soapy science with giant bubbles, dry ice crystal ball bubbles, square bubbles, and more.

  • Milli's Magnificent Bubble Solution
    Sugar? Glycerin? Plain dishwashing soap? Explore which bubble solution makes the longest-lasting bubbles.
  • Giant Bubble Experiment
    For when a mere, ordinary-sized bubble is not enough. Learn how to make a bubble wall and monster bubbles.
  • Bubble Snakes—Bubble Blower
    Hissssssss… here comes the easy-to-make soap bubble snake—in rainbow colors! All you need is a plastic bottle, fabric, food coloring, and bubble solution.
  • Dry Ice Crystal Ball Bubble
    What prediction do you see in this crystal ball? That you’ll love this soap film filled with carbon dioxide gas and water vapor!
  • Square Bubble
    Create a beautiful bubble—so light, so airy, so… square? Find out how to construct a special square bubble maker using pipecleaners.
  • Soap Bubbles—Basic Properties, Bubble Recipe & More
    A big collection of bubble information, even a “bubbliography.”
  • Bubble Town—Soap Bubble Fun and Magic
    Take a trip to Bubble Town to become a bubble blowing expert, with bubble juice recipes and tricks to try.

Use the classic Elephant’s Toothpaste demonstration in new ways.

Youtube ID: GkY2nT-3Glo

Mix up a batch (or two, or three) of ooey, gooey oobleck.

Not messy enough yet? Here's a few more things to try.

  • Detergent-powered Boat
    This small paper boat doesn’t need a motor to make it go—just a drop of detergent and surface tension. Make one!
  • Making Naked Eggs
    How do you get an egg to take off its shell? What does it look and feel like when it’s gone?
  • Bubble Bomb
    Mix up these easy-to-find kitchen chemicals and make a freezer bag explode.
  • Microwave Ivory Soap
    Um, soap? In a microwave? Grab a fresh bar of Ivory soap and see what happens!
  • Disappearing Ink
    Now you see it, now you don’t. Learn about the chemistry behind disappearing ink and make your own.