Observations and results
What is happening when you squeeze the Oobleck? What is happening when you release the pressure? Does the Oobleck remind you of anything else?
The Oobleck mixture isn't your typical liquid—or solid. The cornstarch-and-water mixture creates a fluid that acts more like quicksand than water: applying force (squeezing or tapping it) causes it to become thicker. If you were trapped in a tub of Oobleck, what would be the best way to escape?
Share your Oobleck observations and results! Leave a comment below or share your photos and feedback on Scientific American's Facebook page.
Wash hands with water. Add plenty of extra water to the mixture before pouring it down the drain. Wipe up any dried cornstarch with a dry cloth before cleaning up any remaining residue with a damp sponge.
More to explore
"What is Jell-O?" from Scientific American
"Ask the Experts: What Is Quicksand?" from Scientific American
"States of Matter" overview from Idaho Public Television's Dialogue for Kids
Slime and Goo activities from the American Chemical Society's Science for Kids
Oobleck, Slime & Dancing Spaghetti: Twenty terrific at-home science experiments inspired by favorite children's books by Jennifer Williams, ages 4–8
The Everything Kids' Easy Science Experiments Book: Explore the world of science through quick and easy experiments! By J. Elizabeth Mills, ages 9–12
The Magic of Gravity
What you'll need
• Bottle, jar or canister with a small top opening (larger—but not too much bigger—than the coin)
• 3- by-5-inch note card or other sturdy piece of paper
• Pen or pencil
• Water (optional)