Question

Select the correct answer from each drop-down menu. Burning magnesium gives us magnesium oxide. This is an example of a reaction. is the common element involved with all chemical reactions of this kind.

Answer 1

1 decomposition 2 oxygen

Step-by-step explanation:

The burning of magnesium gives us magnesium oxide.

The chemical symbol of magnesium is Mg.

The chemical symbol of magnesium oxide is MgO.

So, the balanced chemical equation is

2Mg + O2 – 2 MgO.

We see that the element added is O Oxygen. So, the reaction is oxidation which is a decomposition reaction.

In oxidation always, oxygen is the common element involved in all chemical reactions of this kind.