Hydrogen Peroxide Decomposition
Hydrogen Peroxide Decomposition is when hydrogen peroxide breaks apart into water and oxygen gas.
A cup of baking soda sits on the counter. You pour in some vinegar, and the mix foams as a new gas forms. Hydrogen peroxide breaks apart the same way. Its molecules split into water and oxygen gas that bubbles up.
Explaining hydrogen peroxide decomposition by grade level
You can see this happen with a piece of potato. Drop hydrogen peroxide on a raw potato slice and watch it fizz. Those bubbles are oxygen gas escaping. Something inside the potato speeds up the breaking apart.
Projects that explore hydrogen peroxide decomposition
Hydrogen peroxide decomposition is the breakdown of hydrogen peroxide into water and oxygen gas. Living tissues contain the enzyme catalase, which triggers this reaction rapidly. When catalase from liver or potato meets hydrogen peroxide, the oxygen gas released produces a rising column of froth as it escapes.
When hydrogen peroxide breaks apart into water and oxygen gas, the oxygen released can do physical work. Catalase in potatoes drives this decomposition. The released oxygen pushes a small piece of filter paper to the surface of a test tube, giving you a visible way to measure how fast the reaction occurs.
Hydrogen peroxide decomposition produces oxygen gas as a visible sign that the reaction is happening. In one experiment, potato cubes placed in hydrogen peroxide release bubbles you can count. Above 65 degrees Celsius, no bubbles form at all, showing the decomposition of hydrogen peroxide into water and oxygen gas has stopped.