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Countertop chemistry experiment that can be used for potions class.

Materials:

1 1000-mL beaker (or 1 glass mixing bowl)
10 g sodium hydrogen carbonate (or 3 Tsp baking soda)
45 mL 3% acetic acid (or 4-5 Tbsp vinegar)
10 2-cm pieces of vermacelli
water

Instructions:

1. Fill a clear container 3/4 full with water. Add the sodium hydrogen carbonate (or baking soda) and stir to dissolve.
2. Break the vermicelli into 2-cm, or 1-inch, pieces and add them to the container.
3. Add the acetic acid (vinegar). If the vermicelli does not begin to "dance" after a few minutes, add more sodium hydrogen carbonate and acetic acid.
4. If possible, substitute raisins or mothballs (or popcorn and rice) for the vermicelli to see what dances best.