Fizzing Oranges

Fizzing Oranges Experiment GIF

Materials

Lab Safety

Always wear eye protection during science experiments. Never handle sharp objects, open flames, chemicals, or other dangerous objects without adult permission and supervision.

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In this quick and easy experiment, we'll investigate the acid-base reaction that happens between citric acid and baking soda.

Procedure

  1. Fizzing Oranges Experiment Step 1
    Step 1

    Ask an adult to cut the orange into slices for you. This experiment works a little better with wedge-shaped slices (instead of circular slices).

  2. Fizzing Oranges Experiment Step 2
    Step 2

    Use the paper towel to dry as much juice as possible off one of the orange slices.

  3. Fizzing Oranges Experiment Step 3
    Step 3

    Dip one side of the dry orange slice into the baking soda so it forms a very thin layer.

  4. Fizzing Oranges Experiment Step 4
    Step 4

    Holding the baking soda side away from your tongue, take a bite of the orange. The juice from the orange contains citric acid, a weak acid that, when combined with the baking soda, will form bubbles of carbon dioxide, water, and a salt. (We recommend keeping a glass of water handy to rinse out your mouth!)

Materials

Lab Safety

Always wear eye protection during science experiments. Never handle sharp objects, open flames, chemicals, or other dangerous objects without adult permission and supervision.


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