The Chemical Stop Light

The Stoplight Reaction is a dazzling demonstration where a clear solution cycles through red, yellow, and green in sequence; before resetting so you can run it again. It’s like having a science magic show right on your kitchen table.

Designed with homeschoolers in mind, this kit makes abstract concepts come alive through hands-on exploration. Students will discover:

• How chemical indicators work to reveal hidden reactions.

• Oxidation–reduction chemistry in action.

• The role of catalysts and why reaction speed can be controlled.

Safe, repeatable, and endlessly fascinating, the Stoplight Reaction is perfect for curious learners ages 10+ (with adult supervision). Each kit comes with everything you need for multiple runs, plus easy-to-follow instructions that connect the wow-factor to real scientific learning.