WHAT TYPE OF CHEMICAL REACTION IS FORMED FROM Mg + O2----MgO

The reaction is an oxidation process and the product is a solid (usually a powder).

Your question doesn't make much sense as worded. Reactions are not formed, they happen. Products are formed.

You may be looking for the word "synthesis." 2Mg + O2 ==> 2MgO is a synthesis reaction.

The chemical reaction formed from Mg + O2 to produce MgO is a combination reaction.

The type of chemical reaction formed between magnesium (Mg) and oxygen (O2) to form magnesium oxide (MgO) is a synthesis reaction, also known as a combination or direct combination reaction.

To understand the type of chemical reaction, we first need to know the reactants and the product. In this case, the reactants are magnesium (Mg) and oxygen (O2), and the product is magnesium oxide (MgO).

A synthesis reaction occurs when two or more substances combine to form a single, more complex substance. In the given reaction, magnesium and oxygen atoms combine to form magnesium oxide. The chemical equation for this reaction is:

2Mg + O2 -> 2MgO

In this equation, the coefficient "2" in front of Mg indicates that two atoms of magnesium react with one molecule of oxygen (O2) to form two molecules of magnesium oxide (MgO).

It is important to note that this reaction is also an example of a redox reaction (oxidation-reduction reaction). During this reaction, magnesium (Mg) loses electrons (oxidation) while oxygen (O2) gains electrons (reduction).