Can you make color dyes float in liquid? Learn the properties of water and surfactants to float colors. Gather food coloring, whole milk, liquid dish soap/detergent, cotton swab and shallow dish for this challenge with YELL 2020 teen intern Joyce M.

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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.