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    Railroad Commission of Texas
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    In this activity about global climate change, learners will conduct an experiment and collect data to compare the amount of carbon dioxide (CO2) in four different sources of gases. Learners will...

    $5 - $10 per student Ages 11 - 18 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick. This is a take-home version of the display Crystal Garden in the Nature of Matter unit...

    $1 - $5 per student Ages 6 - 14 1 to 7 days
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    COSI
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    In this fun chemistry activity (page 3 of the pdf), learners use cabbage juice to determine the pH of several substances. Designed as a pre- or post-visit lesson in connection to a trip to COSI...

    $1 - $5 per group Ages 8 - 11 30 to 45 minutes
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    WGBH
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    In this hands-on experiment, kids use chemistry to explore whether acids or bases are better at restoring a penny’s shine. Kids follow the scientific process to test a common household cleaning...

    $1 - $5 per student Ages 6 - 11 45 to 60 minutes
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    The Science House
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    In this chemistry demonstration, learners will discover that phenolphthalein is a chemical that displays different colors depending on the acidity or basicity of the environment. Learners will be...

    $5 - $10 per group Ages 6 - 18 Under 5 minutes
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    The Science House
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    In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion. Four learners will act out...

    $1 - $5 per group Ages 11 - 18 5 to 10 minutes