DIY pH Chemistry
Explore acidity and basicity with homemade indicators and reactions.
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Conduct chemistry experiments focused on pH. Extract natural pH indicators from red cabbage, beets, or turmeric. Test common household substances and see color changes. Create acid-base reactions that fizz, foam, and transform. Measure pH of substances from lemon juice to drain cleaner. Build understanding of chemistry fundamentals through colorful, safe, and tangible experiments. Every reaction visible and measurable.
How to start
- 1Boil red cabbage in water to create natural pH indicator
- 2Strain the purple liquid (indicator solution)
- 3Collect samples of household liquids: lemon juice, baking soda solution, soap, vinegar
- 4Add indicator solution to each sample and observe color changes
- 5Create a pH scale reference chart from your observations
- 6Test new substances and predict their pH based on color
What you'll need
- Red CabbageEssential~$2
- Glass Containers or Test TubesEssential~$10
- Common Household SubstancesEssentialFree
- Droppers or PipettesNice to have~$5
- pH Test Strips (verification)Nice to have~$8
Where to learn more
Plot twists
Ways to spice this up when the basics get boring.
- Create a homemade acid-base titration experiment
- Test how pH changes during chemical reactions
- Make pH-sensitive art that changes color
Fun fact
pH scale goes from 0 to 14, but substances beyond this range exist—extremely strong acids and bases go negative or above 14.
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