Film canister rocket, science experiment for children

ByKarthik Kumar D Kon30th Jul 2023, 2023-07-30T11:00:00+05:30
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Film canister rocket, science experiment for children

Title: Film Canister Rocket - Exploring Chemical Reactions and Propulsion Experiment

Objective: To create a film canister rocket and investigate the principles of chemical reactions and propulsion.


  • Film canister with a tight-fitting lid
  • Alka-Seltzer tablets
  • Water
  • Safety goggles
  • Optional: Decorative materials (markers, stickers) for customization


  1. Begin by discussing the concept of chemical reactions and propulsion with the children. Explain that certain chemical reactions can produce gas, which can be used to propel objects, such as a rocket.
  2. Gather the materials required for building the film canister rocket.
  3. Decorate the film canister with markers or stickers to give it a fun and personalized touch (optional).
  4. Put on safety goggles to protect your eyes during the experiment.
  5. Fill the film canister about one-third full with water.
  6. Break an Alka-Seltzer tablet into smaller pieces or use half a tablet.
  7. Quickly drop the pieces of Alka-Seltzer tablet into the film canister, close the lid tightly, and place the canister on a flat surface with the lid facing downward.
  8. Step back and observe as the chemical reaction between the water and Alka-Seltzer tablet produces carbon dioxide gas, building pressure inside the canister.
  9. After a few seconds, the pressure will become too great, causing the lid to pop off and the canister to launch into the air like a rocket.
  10. Repeat the experiment multiple times, making observations and noting any differences in the launch height or distance.
  11. Encourage children to experiment with different amounts of water, Alka-Seltzer tablets, or even the position of the canister to observe how these variables affect the rocket's launch.
  12. Discuss the findings and relate them to the principles of chemical reactions and propulsion. Ask questions to stimulate critical thinking, such as: How does the carbon dioxide gas create enough pressure to launch the rocket? What factors contribute to a higher or lower launch height? How could you modify the experiment to make the rocket go even higher?

Safety Considerations:

  • Adult supervision is recommended, especially when handling Alka-Seltzer tablets and during the launching of the rocket to ensure safety and prevent accidents.
  • Wear safety goggles to protect your eyes during the experiment.

This experiment allows children to explore the principles of chemical reactions and propulsion by creating and launching a film canister rocket. It promotes scientific observation, critical thinking, and an understanding of basic physics and chemistry concepts. Enjoy the thrilling experience of launching your film canister rocket!

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