The balanced chemical equation for the reaction of aluminum with oxygen is:

4 Al + 3 O₂ → 2 Al₂O₃

This equation shows that:

* 4 atoms of aluminum (Al) react with 3 molecules of oxygen (O₂) to produce 2 molecules of aluminum oxide (Al₂O₃).

Here's what the equation means:

* Aluminum (Al) is a solid metal.

* Oxygen (O₂) is a gas in the air.

* Aluminum oxide (Al₂O₃) is a solid compound that forms a protective layer on the surface of aluminum, preventing further oxidation.

This reaction is an example of a combustion reaction because it involves the rapid reaction of a substance with oxygen, releasing heat and light. The reaction is highly exothermic, meaning it releases a significant amount of heat.