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The Aloha Chemical Sunset - Chemical Demonstration Kit

by Flinn Scientific

Item #: AP8988

Price: $23.90

The Aloha Chemical Sunset Chemical Demonstration Kit shows how light passing through a colloidal suspension is affected by the size of the colloidal particles. Two solutions are mixed, producing a spectacular multicolored "sunset."

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

Product Details

Do you and your students need a spring break already? If you can't see a Hawaiian sunset in person, simulate it in the classroom! This fun demonstration shows how light passing through a colloidal suspension is affected by the size of the colloidal particles—this is known as the Tyndall effect. Two solutions are mixed in a Petri dish on an overhead projector, producing a spectacular multicolored "sunset."Enough materials are included to perform the demonstration seven times. Concepts: Colloids and precipitates, Tyndall effect/light scattering. Time Required: 10-15 minutes Materials Provided: Sodium thiosulfate solution, hydrochloric acid solution, Petri dish, and chemical sunset cutouts.