Self inflating balloon, science experiment for children

ByKarthik Kumar D Kon19th Aug 2023, 2023-08-19T13:50:00+05:30
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Self inflating balloon, science experiment for children

Title: Self-Inflating Balloon - Investigating Gas Generation Experiment

Objective: To create a self-inflating balloon using a simple chemical reaction and explore the concept of gas generation.


  • Small empty plastic water or soda bottle
  • Balloon
  • Baking soda (sodium bicarbonate)
  • Vinegar
  • Funnel
  • Optional: Safety goggles (recommended during the experiment)


  1. Begin by discussing the concept of gas generation with the children. Explain that certain chemical reactions can produce gases, which can be used to inflate objects like balloons.
  2. Gather the materials required for the self-inflating balloon experiment.
  3. Put on safety goggles if desired, to protect your eyes during the experiment.
  4. Stretch the opening of the balloon to make it easier to inflate.
  5. Attach the balloon to the mouth of the plastic bottle, ensuring it forms a tight seal.
  6. Using a funnel, carefully add about 2 tablespoons of baking soda into the balloon through its opening.
  7. Fill the plastic bottle about one-third full with vinegar using the funnel. Be careful not to spill any vinegar into the balloon.
  8. Quickly and carefully stretch the balloon's neck to allow the baking soda to fall into the vinegar in the bottle.
  9. Observe as the chemical reaction between the baking soda and vinegar occurs. The reaction produces carbon dioxide gas, which will begin to inflate the balloon.
  10. Continue observing as the balloon inflates. It may take a few moments for the gas to generate and fill the balloon completely.
  11. Once the balloon is fully inflated, carefully remove it from the bottle and tie off the opening.
  12. Discuss the observations with the children. Explain that the chemical reaction between the baking soda (sodium bicarbonate) and vinegar (acetic acid) produces carbon dioxide gas, causing the balloon to inflate.
  13. Reflect on the experiment and discuss other examples of gas generation and chemical reactions in everyday life.

Safety Considerations:

  • Use safety goggles to protect your eyes during the experiment if desired.
  • Handle the vinegar and baking soda with care to avoid contact with eyes or ingestion.

This experiment allows children to create a self-inflating balloon using a chemical reaction between baking soda and vinegar. It promotes scientific observation, critical thinking, and an understanding of gas generation. Enjoy the excitement of witnessing a balloon inflate on its own with this engaging experiment.

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