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4th Grade Science Fair Projects Video for Kids


                                   4th Grade Science Fair Project

In this video, a small kid Simon is demonstrating an easy experiment to generate hydrogen gas by using a homemade hydrogen generator. It is actually very easy.

Required Materials: –

  • 2 Copper sticks
  • Salt
  • Water
  • Battery
  • 2 paper clips
  • Electrical wires
  • 2 empty plastic bottles
  • Sticky tape
  • A plastic tube
  • Hose Pipe

Procedure: –

  • First of all, fix both the copper sticks in the water by drilling in the bottle and secure them with sticky tape.
  • Now fill the bottle with normal water.
  • Add two tablespoons of salt in the water to make a mixture.
  • Connect the cap of the hydrogen generator with the plastic tube.
  • Connect this tube to the hydrogen collector with the help of a hose pipe.
  • The collector contains a plastic bottle arranged upside down and attached with a measuring cup.
  • Attach two wires to the copper sticks. One has positive charge and another has negative charge.
  • Connect these electrical wires to the power source.
  • Now, electrolysis will take place and water will be decomposed in to hydrogen and Oxygen.
  • You can easily see the hydrogen going up from the bottle in the form of bubbles.
  • In the collector section, hydrogen bubble will push the water out of the water and will get collected in the bottle.
  • After the entire process, you will have hydrogen gas in the bottle.
  • As the last step, we will do the flame test.
  • For that, we will take a burning matchstick near the bottle willed with hydrogen and we will get to hear a loud blast because hydrogen is flammable.


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Declan, Tobin. " Fun 4th Grade Science Fair Project for Kids ." Easy Science for Kids, Jul 2020. Web. 14 Jul 2020. < >.

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Tobin, Declan. (2020). Fun 4th Grade Science Fair Project for Kids. Easy Science for Kids. Retrieved from

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