Why does potato and onion bubble up when you put in a hydrogen peroxide solution?

The bubbling you see when you put potato and onion in a hydrogen peroxide solution is due to a reaction that is taking place. Here's a step-by-step explanation:

1. Both potatoes and onions contain an enzyme called catalase.

2. When you add hydrogen peroxide (H2O2) to these vegetables, the catalase enzyme helps to break down the hydrogen peroxide into water (H2O) and oxygen (O2).

3. The oxygen gas that is produced from this reaction is what causes the bubbling effect.

4. This reaction is beneficial for the cells in the vegetables because hydrogen peroxide can be harmful. By breaking it down into harmless water and oxygen, the cells can prevent damage.

5. This is also why hydrogen peroxide bubbles when you put it on a cut or wound. Your blood and cells also contain catalase, and the bubbling you see is the oxygen gas being produced from the reaction.