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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
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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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    Oregon Museum of Science and Industry
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    In this experiment, learners will conduct chemical and physical tests to identify mystery substances. This experiment is very flexible, allowing educators to determine the number of unknowns to...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners are given mysterious white powders and have to determine their identity with chemical tests. This resource includes background information about how to identify detergent, citric acid,...

    $1 - $5 per group Ages 11 - adult 10 to 30 minutes
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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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    Oregon Museum of Science and Industry
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    Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water. A drop of iodine is added to...

    1 cent - $1 per group Ages 11 - adult Under 5 minutes