Can you make a color changing liquid that measures pH? Learn about the acids, bases and more with this colorful experiment. Gather 2 jars, 2 fresh leaves of red cabbage, hot water, a strainer, 3 clear glasses, measuring cups and spoons, baking soda and white vinegar for this vivid challenge with Librarian Anita.

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STEM Challenge Yo’Self is created by the San Francisco Public Library from the Youth Librarian STEM team. Stay STEM-tastic by reading, learning and experimenting at home. Gather materials for a new challenge posted weekly at 2pm on Mondays followed by a Live STEM Zoom Lab with SFPL on Tuesdays at 2pm.