When it is, an electrochemical reaction takes place between the hydrogen and oxygen that directly converts chemical energy into electrical energy. Various types of fuel cells exist, but the one ...

Hydrogen peroxide decomposes on its own into water and oxygen gas. This process is sped up by a catalyst. In this reaction, the catalyst is potassium permanganate, and the bubbles are full of oxygen ...

The reactions of this stage ... by chlorophyll is converted into chemical energy. Some of this energy is used to split water into hydrogen and oxygen. Hydrogen and ATP are both transferred to ...