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    The Science House
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    In this chemistry activity, learners use the lowered freezing point of water to chill another mixture (ice cream) to the solid state. Learners will record the temperature of the ice before and...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 12 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners examine how recyclable materials are separated by various properties at recycling centers. Learners...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    COSI
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    In this activity, learners explore why frost forms. They create their own frost using a solution of ice water and salt in a glass. The salt allows the temperature of the water to drop below the...

    1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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    NOAA
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    In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream. Pairs of learners will combine ingredients in a plastic bag and then add...

    $5 - $10 per group Ages 6 - 14 30 to 45 minutes
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    The Exploratorium
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    This activity shows you how to make amazing crystal spikes using Epsom salt and the sun. When Epsom salt is dissolved in water and placed in a container in the sun, the water evaporates, leaving...

    $1 - $5 per student Ages 6 - 11 1 to 2 hours
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    American Chemical Society
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    In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent. Suggested extensions...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners compare different types of salt crystals under a magnifying glass. Learners compare the size, shape, and color of table salt, Epsom salt, monosodium glutamate (MSG) and...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    COSI
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    In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own. They will grow and compare three types of crystals and explore how a crystal forms as...

    $1 - $5 per student Ages 6 - 14 1 to 7 days
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    New York Hall of Science
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    Don't scream for ice cream -- make it with milk, sugar, flavoring and some 'salt-water' ice. Discover the chemistry of ice cream by creating your own. <b>[Activity is publicly...

    $1 - $5 per student Ages 4 - 11 10 to 30 minutes
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    COSI
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    In this activity, which requires adult supervision, learners get to explore the awesome power of chemistry. They will choose from one of two types of crystals they want to grow and see first-hand...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes

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