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    The Exploratorium
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    Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator. This activity also has helpful...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    The Science House
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    In this chemistry activity, learners make indicator solution from red cabbage. Then, learners test everyday foods and household substances using the cabbage juice indicator. Learners will record...

    $5 - $10 per group Ages 11 - 18 45 to 60 minutes
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    COSI
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    In this chemistry activity, learners will test the pH of various foods and household substances using cabbage. They will explore the concept of acidic and basic chemicals, learn that pH is a common...

    $5 - $10 per group Ages 8 - 11 10 to 30 minutes
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    Mount Holyoke College
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    In this activity, learners discover how a cabbage juice indicator helps identify acids and bases, and how iodine indicates the presence of starch. Learners test cream of tartar, baking soda, lemon...

    $10 - $20 per student Ages 4 - 8 10 to 30 minutes
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    University of Wisconsin-Madison
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    In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow. The...

    $1 - $5 per student Ages 4 - 14 1 to 4 weeks
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    Sciencenter
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    In this chemistry challenge, learners combine acids and bases in a universal indicator to create five different colors. Using vinegar, washing soda, and Bogen universal indicator, the goal is to...

    Over $20 per group Ages 4 - 14 10 to 30 minutes
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    University of Wisconsin-Madison
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    Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle. The fermentation process takes from 3 days to 2 weeks to complete, and learners measure the...

    $1 - $5 per group Ages 4 - 14 1 to 4 weeks
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners blow into balloons and collect their breath--carbon dioxide gas (CO2). They then blow the CO2 from the balloon into a solution of acid-base indicator. The indicator changes color to show...

    $1 - $5 per student Ages 8 - 14 5 to 10 minutes
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    American Society for Microbiology
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    A group of learners simulates the spread of disease by trading slips of paper, one set of which has been treated with a baking soda solution. After trading papers amongst the group, learners test...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Miami Science Museum
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    In this activity, Frankenstein's lab is running out of electricity! Learners use fruit to help Igor find a temporary source of energy to turn on a light. Learners hook up a piece of citrus...

    $1 - $5 per student Ages 8 - 14 10 to 30 minutes

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