Mg equals mg2+ +2e-
Synthesis or addition, not combustion.
It is a neutralistion reaction.
This is an oxidation-reduction reaction.
Combustion reaction. (burning)
Its a Synthesis reaction.
It is an eothermic type of reaction.
An exothermic chemical reaction.
This is an double-displacement reaction, in this case and acid-base reaction.
It is a thermal decomposition reaction.
It is an oxydation: 2Mg + O2 = 2MgO
That is a synthesis reaction, also called a combination reaction.
In this reaction, Sulfur is burned and produce Sulfur dioxide.
The above reaction is a combination type reaction between silver (Ag) and sulfur (S)