Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
Bubbles and heat, steam and foam. With the Old Foamey: Decomposition of Hydrogen Peroxide—ChemTopic™ Lab Activity, mix hydrogen peroxide with dishwashing liquid, add sodium iodide catalyst, then stand back and observe the decomposition reaction as it erupts in a wall of cascading foam. Available as part of the Chemical Reactions—ChemTopic™ Labs digital collection. Click the Price link for digital collection pricing.