Moldy Apples

Materials:

• 1 apple cut into 4 equal pieces
• 4 mason jars
• Vinegar
• Salt Water
• Lemon Juice

Instructions:

1. Put an apple piece in each container.
2. Fill each container halfway with one of the liquids. Make sure the apple piece is covered in the liquid. The fourth apple and container is your control group, so don’t add anything to that one.
3. Keep the jars in cool area for a week.
4. Observe apples for rot, mold, and any other changes.

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How it Works:

Bacteria loves to grow on things like fruit. When you put fruit in the refrigerator, the cold temperature slows down the process. However, in this experiment the fruit is exposed to room temperature. Salt is a natural preserver because it dehydrated the water from the apple, reducing the area where bacteria can grow and thrive. On the other hand, the lemon juice was a perfect playground for bacteria to play because of the sugar.

Extra Experiments:

1. 1. Add a fifth apple piece and put it in the fridge for the week.
   2. Do the same exact experiment as the original but instead conduct it all in the refrigerator and see if the results change.

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