Science Experiments for Kids: Apple Oxidation Experiment

Blog » Science Experiments for Kids: Apple Oxidation Experiment

Apple Oxidation Experiment

Engaging kids in science experiments not only sparks their curiosity but also fosters a love for learning. If you’re searching for an exciting and educational science experiment for kids, look no further than the Apple Oxidation Experiment. In this article, we’ll explore this simple and captivating experiment that introduces children to the concept of oxidation and the power of antioxidants. At ConnectEd, we make learning science fun, engaging and interactive. Let’s dive in!


In order to proceed with this experiment, we need below items:

  • Fresh apple
  • Knife
  • Cutting board
  • Lemon juice
  • Paintbrush or cotton swab
  • Two small bowls

The Experiment:

We offer free demos for students to experience the ConnectEd learning experience. Let’s jump in to steps, how this experiment works!!!

  1. Slice the apple in half using the knife and cutting board.
  2. Place one half in a bowl and keep the other half aside.
  3. Dip the paintbrush or cotton swab into the lemon juice.
  4. Gently apply the lemon juice to the cut surface of the apple in the bowl.
  5. Allow both halves of the apple to sit undisturbed for a few hours.
  6. Observe and document any changes in the apples.

The Science behind It:

  • Oxidation is a chemical reaction that occurs when oxygen reacts with the substances in the apple, resulting in browning or discoloration.
  • Lemon juice contains citric acid, which acts as an antioxidant.
  • The application of lemon juice forms a protective layer on the apple’s cut surface, slowing down the oxidation process.


  • The untreated apple half will likely undergo oxidation, turning brown.
  • The lemon juice-treated half will show a significantly slower rate of browning, if any.
  • This demonstrates the effectiveness of antioxidants in preserving the appearance of fruits and vegetables by reducing oxidation.

Additional Exploration:

  • Extend the experiment to other fruits like bananas, pears, or avocados.
  • Encourage children to brainstorm alternative methods to slow down oxidation, such as using different acidic fruits or refrigerating cut fruits to minimize oxygen exposure.
  • Encourage documentation and comparison of results for a deeper understanding.

Benefits for Kids:

  • The Apple Oxidation Experiment introduces children to the scientific method, stimulating curiosity and promoting critical thinking skills.
  • Hands-on engagement makes science enjoyable and helps establish a lasting interest in scientific exploration.
  • Building a foundation of scientific knowledge through simple and fun experiments paves the way for more complex concepts in the future.

Take It to the Next Level:

  • Enhance your child’s scientific journey with age-appropriate science experiment books or kits, such as those designed for standard 8 students.
  • These resources offer a plethora of easy and exciting experiments, further igniting your child’s passion for science.


The Apple Oxidation Experiment is a fantastic science activity that combines fun and education. By conducting this experiment, children gain valuable insights into oxidation, antioxidants, and the scientific method. Nurture their scientific curiosity and critical thinking skills, and watch them embark on a lifelong journey of discovery. We brings a lot of benefits and complements the classroom learning experience for our lil scientists.

Explore More Topics

Ready to brush up on something new? We've got more to read right this way.