Can you remove an egg's shell? Learn about chemical reactions with acids and bases and make a raw egg bounce in this bubbly experiment. Gather a jar or glass, an egg, white vinegar, a spoon or tongs and some food coloring for this unique challenge with Librarian Davey.

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STEM Challenge is created by the San Francisco Public Library from the Youth Librarian STEM team. Stay STEM-tastic by reading, learning and experimenting at home.

In response to feedback from our Black community and staff, we updated the original name STEM Challenge Yo’Self to STEM Challenge on July 19, 2021. We recognize the original title is appropriated from Black vernacular and perpetuates racism, and has caused harm to our Black/BIPOC community members and staff. Our library is working towards being an anti-racist institution and committed to doing better.