We recognize acids and bases using red cabbage
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The document describes an experiment using red cabbage stock to identify acids and bases. Students boiled red cabbage to make an indicator solution. They observed that vinegar turned the stock red, indicating it is an acid, while baking soda turned the stock blue, showing it is a base. Mixing the vinegar and baking soda solutions created a purple reaction, resembling a volcano. The Polish students enjoyed conducting the colorful experiment.
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We recognize acids and bases using red cabbage
- 1. Nature Explorers Club WE RECOGNIZE ACIDS AND BASES USING RED CABBAGE STOCK
- 2. BOIL RED CABBAGE WITHOUT SALT
- 3. WE NEED VINEGAR AND BAKING SODA
- 4. INTO THE GLASS ON THE RIGHT WE POUR VINEGAR (ACID), ON THE LEFT – WE ADD BAKING SODA (BASE)
- 5. THE STOCK CHANGES ITS COLOUR: BAKING SODA (BASE) IS BLUE, VINEGAR (ACID) IS RED
- 6. WE TOOK TWO PLATES. ON THE PLATE ON THE LEFT WE POURED SOME VINEGAR, AND ON THE PLATE ON THE RIGHT WE POURED SOME WATER WITH BAKING SODA
- 7. WE CAN SEE THE RESULTS AGAIN: ROLLED PIECES OF PAPER TOWEL ARE RED-PURPLE ON THE PLATE WITH VINEGAR (ACID) AND BLUE – ON THE PLATE WITH BAKING SODA ( BASE)
- 8. WHEN WE POUR THE STOCK WITH BAKING SODA INTO THE STOCK WITH VINEGAR WE GET PURPLE VOLCANO
- 10. POLISH EXPLORERS HAD FUN MAKING THIS EXPERIMENT
- 11. THANK YOU FOR WATCHING Szkoła Podstawowa nr 9 Dzierżoniów , Poland