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Acid–Base Rainbow Fountain—Chemical Demonstration Kit

By: The Flinn Staff

Item #: AP7498

Price: $35.80

The Acid–Base Rainbow Fountain Chemical Demonstration Kit is versatile and can be used to teach acid–base chemistry and gas laws. Quench your students’ thirst for knowledge with a fountain of surprises in this guided-inquiry demonstration.

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

Product Details

Quench your students’ thirst for knowledge with a fountain of surprises in this guided-inquiry demonstration. The fountain appears to require no energy to run—defying the laws of nature. Marvel as Hero of Alexandria did 1900 years ago when he used air pressure changes and compressed air to lift water. As the solutions flow and mix, a beautiful rainbow of colors emerges. Varying acid and base concentrations change pH levels to create new color patterns each time! Use this versatile demonstration multiple times when teaching acid–base chemistry and gas laws. Detailed instructions include student questions and answers for the teacher.

Concepts: Air pressure and vacuum, pH, indicators, neutralization.
Time Required: 15 minutes
Materials Provided: Hydrochloric acid, sodium hydroxide, universal indicator, fountain connector, Beral-type pipets, two 2-L soda bottles, universal indicator chart.