Yesterday we learned that baking soda (a base) and citric acid (an acid) makes a gas called carbon dioxide when mixed together. It's a chemical reaction! The fizz we observed was made up of lots of tiny carbon dioxide bubbles.
Step 1 today was dissolving the baking soda in water. We used the base of baking soda to test different liquids to see if they were acidic.
Vinegar made a fizzing reaction which told us that yes, it was an acid.
Squeezed half of a lemon into the cup, then added 1 tablespoon baking soda. Super fizzy!
Super big YES; lemon juice is acidic.
Observing the bubbles as he stirred with the stir stick.
Apple-berry juice showed no fizzing when added to the baking soda so we inferred it was not acidic.
Lemon juice was so fun they decide try that again to observe the big chemical reaction.
Loved those happy interested faces today:)
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