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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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    BioEd
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    In this activity, learners observe what happens when yeast cells are provided with a source of food (sugar). Red cabbage "juice" will serve as an indicator for the presence of carbon...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    NOAA
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    In this experiment, learners will investigate the release of carbon-containing gas from living and nonliving sources. Learners scratch the surface of a limestone rock and observe what happens when...

    $1 - $5 per student Ages 8 - 14 45 to 60 minutes
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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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    Oregon Museum of Science and Industry
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    Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house. Red cabbage juice is purple in water (neutral), pink or red in vinegar ...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    This activity uses turmeric, a common spice in curry, as an indicator for acidity and basicity. Turmeric is yellow in acid and neutral substances, but turns bright red with bases. Learners can use...

    $1 - $5 per student Ages 11 - 14 10 to 30 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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    Oregon Museum of Science and Industry
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    In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia). They add an indicator to each...

    $5 - $10 per group Ages 8 - adult Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again....

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes

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