How To Make A Lemon Volcano


Creating a lemon volcano is a fun and exciting science experiment that combines the acidic properties of lemons with the effervescent reactions of baking soda to create a mini volcanic eruption. Not only is it a visually captivating experiment, but it also provides an opportunity to understand the science behind chemical reactions and the properties of acids and bases.

Materials Needed

  • 1 lemon
  • Baking soda
  • Dishwashing soap
  • Food coloring (optional)
  • A shallow container or plate
  • A knife
  • A spoon


  1. Start by cutting the lemon in half using the knife. Ensure that you have a flat surface on one side of the lemon halves to create a stable base for the volcano.
  2. Place the lemon halves on the shallow container or plate, cut side up.
  3. Squeeze the lemon halves gently to release some juice onto the cut surface.
  4. Add a few drops of dishwashing soap onto the lemon halves. This will help create more foam and bubbles during the reaction.
  5. Optional: Add a few drops of food coloring to the lemon halves to make the eruption more visually appealing.
  6. Take a spoonful of baking soda and carefully sprinkle it onto the lemon halves. Observe the immediate reaction as the baking soda reacts with the lemon juice and soap.
  7. Continue adding baking soda as desired, observing the ongoing reaction and eruption.

The Science Behind It

The reaction between the acidic lemon juice (citric acid) and the alkaline baking soda (sodium bicarbonate) creates carbon dioxide gas. The dishwashing soap helps to trap the gas, forming bubbles that result in a foamy eruption. The release of carbon dioxide gas creates the volcano-like effect, similar to how magma erupts from a volcano.


Making a lemon volcano is a fantastic way to engage in a hands-on science experiment while having fun. It allows you to witness the chemical reactions between an acid and a base, providing an interactive learning experience. So gather your materials and enjoy creating your very own lemon volcano!

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