Write the equations of chemical reactions for obtaining oxides during combustion: 1) simple substances, 2) complex?

Oxides are compounds of atoms of elements (metals and non-metals) with oxygen atoms, with the exception of fluorine, since fluorine is a more electronegative element than oxygen (the compound of oxygen with fluorine exists in the form of oxygen fluoride, in which the oxidation state of oxygen is +2).

Distinguish between acidic, basic, amphoteric oxides.

Let us give examples of combustion (and hence the production of oxides) of simple substances:
4AL + 3O2 = 2AL2O3

C + 02 = CO2

4Li + O2 = 2Li2O

S + O2 = SO2

2Cu + O2 = 2CuO

Examples of combustion of complex substances:
4FeS + 5O2 = 2Fe2O3 + 4SO2

4NH3 + 3O2 = 2N2 + 6H20