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    Oregon Museum of Science and Industry
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    In this activity, learners discover that atoms and ions of different metals will change places. Learners place drops of copper sulfate solution onto a steel nail, then observe as the solution loses...

    1 cent - $1 per group Ages 11 - adult Under 5 minutes
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    Museum of Science and Industry, Chicago
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    Learners place water and part of an antacid tablet in a film canister. The reaction creates a gas reaction that launches the film canister like a rocket.

    1 cent - $1 per student Ages 6 - 18 Under 5 minutes