Find out the difference between pH of fruits and vegetables in this 5th grade acidity science fair project.
10 years old
United States of America
Purpose of Project/Experiment
What is the difference between the pH of fruits & vegetables?
HypothesisI think vegetables have more acidity, so there will be more pH in vegetables.
- 1 red cabbage
- Large coffee filters
- ½ cup vanilla extract per cup
- 1 tbs. baking soda mixed with distilled water per cup
- 1 cup distilled water per cup
- 12 clear plastic cups
- 1 measuring cup set
- 1 microwave safe plate
- 1 microwave
- Chop the cabbage and microwave on high power for 3-5 mins.
- Press a coffee filter into cabbage. Allow to dry.
- Cut the filter into small strips. These strips will serve as pH paper.
- In 4 cups, pour vanilla extract. In another 4, pour baking soda into distilled water and mix. Repeat with distilled water.
- Place beets in 1 cup of solution. Repeat with other solutions and grapes, not to mention the vegetables.
- Record your results.
- Take note: Keep the tray in sunshine for 3 hrs. a day.
Experimental Data and ResultsIn every part of my acidity science fair project experiment, the fruits, vegetables, and the solutions, remain the same. In order to isolate different conditions and keep optimum care, the fruits and vegetables are changed, the solutions are different as well. The sunshine can be changed.
Look at the chemistry science fair project ideas and kits.