It's important to be precise with our language when talking about chemical reactions. Oxygen itself doesn't "burn." It's a key ingredient in combustion, but it's not what's being burned.

Here's a breakdown:

* Combustion is a chemical process that involves the rapid reaction between a substance (the fuel) and an oxidant (usually oxygen), producing heat and light.

* When a fuel is burned with oxygen, the products are:

1. Carbon Dioxide (CO₂): This is the primary product if the fuel is a carbon-containing substance like wood, fossil fuels, or even carbohydrates in your body.

2. Water (H₂O): This is produced if the fuel contains hydrogen, which is common in many fuels.

3. Other byproducts: Depending on the specific fuel and conditions, there may be other byproducts like ash, smoke, or even nitrogen oxides (NOx) if nitrogen is present.

So, to answer your question directly, you need to specify what's being burned. However, the three most common products of combustion with oxygen are carbon dioxide, water, and potentially other byproducts.