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Apple Oxidation / Oxidacion de Manzanas

Objective:

  • Students will practice making a hypothesis.   

  • Students will observe the oxidation process.

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Materials:

5 Ziploc bags, apple, water, lemon juice, vinegar, milk, knife (for adult use), cutting board, permanent marker

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Procedure:

  1. Gather your materials

  2. On 4 Ziploc bags, write the name of the liquid you’re going to test. Label a fifth bag “nothing” for your control bag. This bag will contain apples with no liquid. That way, you’ll be able to see the difference between a normal apple and the other apples that have been soaked!

  3. Pour the water, lemon juice, vinegar, and milk in separate bags. Make sure to match each liquid to its label.

  4. Place two apple slices in each bag. Seal the bag and lightly shake it so the liquid coats the apple slices. Let them soak for two or three minutes.

  5. Pour any excess liquid out of the bags. Reseal them and check on the apples every 10 to 15 minutes to see what happens.

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