Hydrogen Bubbles - Little Shop of Physics

Passing a current through water makes hydrogen and oxygen, which fill a bubble that can be ignited.

Parts Needed

1 1 liter bottle
8 9 V batteries
6 Stainless steel nails or screws
6 Clip leads
Bubble solution
Lighter

This demonstration is only for the experienced! Little Shop of Physics took several precautions to do this demonstration safely. Don’t try this yourself unless you understand and appreciate the difficulties and the dangers.

Credit: Little Shop of Physics, Colorado State University