Learn about chemical reactions. Gather a plastic bottle, baking soda and vinegar for this challenge with YELL 2020 teen intern Ryan.

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STEM Challenge | Teen Takeover is created by the San Francisco Public Library from the Youth Engaged in Library Leadership (YELL) STEM team. Stay STEM-tastic by reading, learning and experimenting at home. Visit www.sfpl.org/stemchallenge for more resources.