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    Oregon Museum of Science and Industry
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    In this activity, learners investigate vitamin C. Using a simple starch and iodine demonstration, learners discover that vitamin C is an antioxidant, and protects us by reacting with toxic...

    $5 - $10 per group Ages 8 - adult Under 5 minutes
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    American Chemical Society
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    In this activity on page 8 of the PDF, learners investigate vitamin C. Learners conduct a chemistry experiment to determine if Tang drink mix or orange juice contains more vitamin C. Use this...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    This is an activity (located on page 3 of the PDF) about the use of reduction agents to decontaminate ground water. Learners will conduct a reduction-oxidation (redox) reaction in which vitamin C...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    NASA
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    In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process. After the experiment, learners measure the exposed surface area of the...

    $10 - $20 per group Ages 8 - 14 1 to 2 hours
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    Oregon Museum of Science and Industry
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    Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution. The iodine stains the paper blue, but the...

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