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    The Science House
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    In this chemistry activity, learners use common chemicals and metals to examine reactions that produce gaseous substances. Learners will identify the gases produced and write a balanced equation...

    $1 - $5 per student Ages 11 - 18 5 to 10 minutes
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    The Science House
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    In this chemistry demonstration, learners observe a chemical reaction that produces a colorful effect. Learners will be surprised to see the colors change to red, white, and blue when ammonia is...

    $1 - $5 per group Ages 11 - 18 Under 5 minutes
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    Science Museum (London)
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    In this demonstration, educators make silicon from sand with a mighty explosion! Learners discover the properties of everyday materials and observe how these properties can change to create new...

    $10 - $20 per group Ages 8 - 18 5 to 10 minutes
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    Smithsonian Center for Education and Museum Studies
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    Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs. cool room...

    $1 - $5 per group Ages 8 - 14 1 to 7 days