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    Oregon Museum of Science and Industry
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    In two separate bags, learners mix water with Epsom salts and detergent. They discover that one mixture becomes cold (dissolving is an endothermic process), and one becomes hot (dissolving is an...

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