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Wild Sourdough
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In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.
Acids & Bases
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In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.
Indicating Electrolysis
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Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.
Breathing Blue
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In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.
Forwards and Backwards
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In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia).
Milk Plastic
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In this activity, learners transform everyday milk into small plastic figurines and jewelry. Use this activity to introduce learners to monomers and polymers.