It's not accurate to say that oxygen is *reduced* in the reaction of hydrogen with oxygen to make water. Instead, oxygen is oxidized in this reaction. Here's why:

* Oxidation: Involves the loss of electrons or an increase in oxidation state.

* Reduction: Involves the gain of electrons or a decrease in oxidation state.

Let's look at the reaction:

2H₂ + O₂ → 2H₂O

* Hydrogen (H₂): Starts with an oxidation state of 0 and ends with an oxidation state of +1 in water (H₂O). This means hydrogen is oxidized.

* Oxygen (O₂): Starts with an oxidation state of 0 and ends with an oxidation state of -2 in water (H₂O). This means oxygen is reduced.

In summary:

* Oxygen gains electrons (reduces) by forming bonds with hydrogen.

* Hydrogen loses electrons (oxidizes) by forming bonds with oxygen.

This is a classic example of a redox reaction where one element is oxidized, and the other is reduced.