Do it your-self electrolysis - Dangerously Fun

Electrolysis is the use of electricity to separate elements or compounds. Here the objective is to separate water into hydrogen gas and oxygen gas. This project can become dangerous if you decide to collect the gases. You won’t get pure oxygen unless your battery has platinum electrodes, but you can collect a sample of hydrogen gas. Hydrogen burns easily in air (Hindenburg) and burns vigorously with a clear flame when mixed with oxygen (space shuttle main engines). Read more.