You are correct! When methane (CH₄) burns, it reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). Nitrogen (N₂) is not a product of this reaction.

Here's a breakdown:

The Chemical Equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

Explanation:

* Methane (CH₄) is a hydrocarbon, meaning it's made of carbon and hydrogen.

* Oxygen (O₂) is the fuel for the combustion reaction.

* Carbon dioxide (CO₂) is formed when the carbon from the methane combines with oxygen.

* Water (H₂O) is formed when the hydrogen from methane combines with oxygen.

Nitrogen's Role:

While nitrogen is the most abundant gas in the air, it does not participate directly in the burning of methane. Nitrogen is typically inert in this reaction.

However, at very high temperatures, like those found in internal combustion engines, some nitrogen can react with oxygen to form nitrogen oxides (NOx). These are pollutants that contribute to smog and acid rain.