Click here to read important information about this experiment. Be sure to consult with an adult first before performing any experiment.
You can prevent a cut apple from turning brown.
Do you know the answer to this question? Come up with your hypothesis and write it in your notebook. Perform the experiment below to see if your hypothesis is true.
- One apple
- One Sunkist lemon, juiced
- Cut the apple into quarters. (Don't use a sharp knife without an adult's help!)
- Leave one of the apple quarters on the kitchen table.
- Place another apple quarter in the refrigerator.
- Sprinkle lemon juice on the other two apple quarters.
- Place one of these quarters on the table and the other in the refrigerator.
- Check each of the apples every minute or so.
Which quarters turned brown first? Which quarters turned brown last? Record your observations in your notebook. Click here to compare your findings with those of other scientists. Is the hypothesis you wrote in your notebook before you started the experiment true?
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