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    Make
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    In this activity, learners use a pneumatic trough (see related activity) to generate and collect pure oxygen. Learners will test to see if they've generated oxygen by observing the combustion...

    Over $20 per student Ages 14 - adult 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame. Two test tubes are used to generate the gases: zinc and hydrochloric acid to...

    1 cent - $1 per group Ages 14 - adult Under 5 minutes