Acid Test (Soda)

Sour taste is the body's way of identifying acid, so if your candy tastes sour, it contains acid. To test for acid yourself, try this:

What you need:
  • Fruit-flavored or sour candy, such as LemonHeads, Nerds, Skittles, StarBurst, or Sweet Tarts
  • Baking soda

What to do:
  1. Dissolve the candy in a half-cup of water.
  2. Sprinkle a spoonful of baking soda into water.
  3. Watch for bubbles. If it bubbles, the candy is acidic.

What's happening:
When you dissolve acidic candy in water and add baking soda, the reaction produces carbon dioxide gas. This is what makes the bubbles.

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