In the spring many schools around the country are conducting science fairs to help children learn time management skills and see practical applications to relevant questions. From building water rockets to balloons that won’t pop or finding out how much sugar is in a can of soda, science fairs offer a great learning experience for our next generation of scientists.

Dry ice lends itself to several great science experiments including boo bubbles, blowing up balloons and making a spoon sing. Tyler from Latrobe, PA decided to do his spring science fair experiment to make a dry ice bubble. Tyler’s question was, “Which soap will make the biggest bubble?” Using Dawn dish soap, All laundry detergent and ordinary hand soap, Tyler hypothesized that using Dawn would make the largest bubble.

To create a dry ice bubble similar to Tyler’s experiment, you will need the following materials:

  • Dry ice pellets
  • Large bowl with a “lip” around the top edge
  • Warm water
  • Small cup for soap mixture
  • Shoe string
  • Liquid soap
  • Tongs
  • Gloves
  • Towels/paper towels
  • Safety Glasses

In each small cup, mix 2 tablespoons of soap with 2 tablespoons of water and place a shoe string inside to soak. Fill the large bowl half full with warm water. When ready to begin, dunk your finger in the first soapy mixture and run it around the lip of the bowl. Wearing gloves and using tongs, place several dry ice pellets in the water. Quickly, take the shoe string and drag it across the top of the bowl to form a seal to trap the sublimating carbon dioxide gas, creating a bubble.

Do this again with the other types of soap to see if you get different results. Was Tyler correct with his hypothesis? Maybe you have other types of soap you want to try. And, to take it a step further you can “grow” bubbles by adding some of your soap solution to the bowl of dry ice and water. See how high you can grow the bubbles!

Please be safe when handling dry ice. Click here for our dry ice safe handling tips.

Good luck to Tyler with his science fair project and Thank You for using Continental Carbonic dry ice!

shoe string applied     Bubble ready to popBubble popped