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In this chemistry activity, learners explore chemical reactions and their effects, including the kind of reaction in the human body that makes people burp!

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this chemistry activity, learners fill two test tubes with a solution of "artificial stomach fluid," consisting of hydrochloric acid in the same concentration as in human stomachs, some soap to cre

$1 - $5 per group Ages 14 - adult 5 to 10 minutes