Monday, 10/19/2020
3:00 - 3:15
Virtual Library

Online Services
San Francisco, CA 94102
United States

Can you manipulate molecules? Learn to create your very own cloud as well as discover the fascinating scientific concepts behind it. Gather a glass jar with a lid, 1/3 cup of hot water, 4–5 ice cubes, hairspray and a few drops of dye for this challenge with YELL 2020 teen intern Sharon.


Tune in to SFPL YouTube.


STEM Challenge Yo’Self | 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. Gather materials for a new challenge posted at 3pm on weekdays throughout October. Visit for more resources.