<What to prepare

Empty plastic bottles (circular ones containing carbonated beverages)
Cutter
Clay
Glass Rod
Vinyl Tape
Scissors
Hydrogen Cylinders
Chuckerman.

＜1>

Cut off the bottom of the PET bottle. Be very careful not to cut your hand with the cutter, as it is slippery.

＜2>

Attach the clay to the glass tube and insert it into the mouth of the plastic bottle. Fill the gap tightly to prevent air from escaping.

＜3>

Wrap vinyl tape for reinforcement.

＜4>

Hold the tip of the glass tube with your finger, attach the tube to the hydrogen cylinder, insert the tube at the top, and slowly fill it with hydrogen.
*If you put hydrogen in the bottom first, it will mix with the air (oxygen) in the PET bottle and cause an explosion at the moment of ignition.

＜5>

It ignites immediately after removing the finger.
At first, the flame is silently lit because of the 100% hydrogen content.
(Actual hydrogen fire is colorless, but has a slight orange tinge due to soot from the gas.)
After a while, heat is transferred into the PET bottle and mixes with the air (oxygen) from below, releasing energy all at once and creating an explosive atmosphere.

＜In the experiment

• When conducting the work, please take all necessary safety precautions.
• REVANES Corporation, having conducted this experiment on its ownPlease note that we are not responsible for any accidents, injuries or illnesses that may occur.
• This experiment was developed by Mr. Ishitobi, a teacher at a junior high school attached to Chiba University, and was selected for the Honda Award, an educational support grant. Please refer to this page for a detailed explanation.

https://ed.lne.st/2016/03/03/honda-h2-kit/

*If you register as an Education Support Teacher, you can download educational materials.