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The Effervescent Oscillator - Chemical Demonstration Kit

by Flinn Scientific

Item #: AP8658

Price: $25.50

The Effervescent Oscillator Chemical Demonstration Kit is unique, where the oscillations are between the generation and cessation of gas bubbles. Students watch the solution effervesce, the bubbling decreasing and then increasing again.

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This item can only be shipped to schools, museums and science centers

Product Details

Oscillating reactions typically involve eye-catching color changes but here's a unique one where the oscillations are between the generation and cessation of gas bubbles. A colorless solution will effervesce intensely and then the bubbling will decrease and then increase again, etc. The oscillations will continue for several minutes. Teacher Demonstration Notes included. Enough materials are included to perform the demonstration seven times. Concepts: Oscillating reactions, supersaturation, exothermic reactions. Time Required: 15 minutes Chemicals Provided: Acidified ammonium sulfate solution and sodium nitrite solution.