Magnesium burns in `CO_(2)` to form

When magnesium burns in Cl_2 it form magnesium chloride. Which element is reduced ?

What happen when magnesium burns in CO_2 ?

Magnesium burns in air to form magnesium oxide. Do you know any other compound that is formed along with magnesium oxide ?

Magnesium burns to form

Magnesium burns in air to give :