What this lesson teaches
Acids bases and indicators.
Test household liquids as acid or base!
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Acids bases and indicators.
Using natural indicators (turmeric, red cabbage juice) makes chemistry tangible and accessible outside school. Students who test household substances remember acid-base chemistry through the specific colours they saw — a concrete memory that textbook definitions don't create.
1. Make cabbage indicator. 2. Add lemon juice. 3. Observe color. 4. Add baking soda. 5. Compare 5 liquids.