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    The Exploratorium
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    In this activity, learners conduct an oxidation experiment that turns old pennies bright and shiny. Learners soak 20 dull, dirty pennies in a bowl of salt and vinegar for five minutes. They rinse...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Smithsonian Center for Education and Museum Studies
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    In this activity (located on pages 9-14 of PDF), learners visit a cemetery to examine the distinguishing characteristics of rock weathering. After researching stone weathering and acid rain,...

    free Ages 8 - 14 1 to 7 days
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    New York Hall of Science
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    Can you think of ways to collect and dispose of spilled oil without causing further harm to the environment? In this activity, learners will discover which materials best clean up oil by creating...

    $5 - $10 per student Ages 6 - 11 10 to 30 minutes
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    NOAA
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    In this group activity, learners act out key stages of the "ocean carbon cycle" (also known as the "carbonate buffer system") through motions, rearranging blocks and team tasks....

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    American Chemical Society
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    In this activity on page 7 of the PDF (Chemistry—It’s Elemental), learners use iodine to identify foods that contain starch. Compare the starch content of a ripe banana, an overripe banana, milk,...

    $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 on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients. Learners compare four liquids and their...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best...

    $1 - $5 per group Ages 6 - 11 1 to 7 days
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    Oregon Museum of Science and Industry
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    In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime. Learners will describe the various...

    $10 - $20 per group Ages 8 - 11 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners explore chemiluminescence and fluorescence. Learners examine 3 different solutions in regular light, in the dark with added bleach solution, and under a black light. This...

    $10 - $20 per group Ages 8 - 18 30 to 45 minutes
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    Make
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    In this activity, learners make a small batch of biodiesel that will work in any diesel engine. Learners use an old juice bottle as a "reactor" vessel to chemically process vegetable oil...

    $10 - $20 per group Ages 14 - adult 1 to 7 days

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