Yes. Because there is a chemical change
2Mg + O2 2MgO + Energy
MgO
Heating magnesium is a physical process.But the reaction of magnesium with oxygen at high temperature is a chemical process.
Oxidation. At high temperature magnesium ignites - and that is called combustion.
A compound / element created by a chemical reaction. Example: Magnesium + Oxygen -> Magnesium Oxide The Magnesium Oxide would be the Product.
In any redox reaction, at least one reactant is reduced and at least one reactant is oxidized. In the reaction between magnesium and oxygen, the magnesium atoms are oxidized because they lose electrons and the oxygen atoms are reduced because they gain electrons. Furthermore, the premise of the question is erroneous: The reaction does not as alleged show only addition of oxygen; instead it shows combination of magnesium and oxygen to form a new chemical entity, the compound magnesium oxide.
This is a chemical change, like any other burning reaction: magnesium is turned into magnesium oxide by burning reaction with oxygen (from air). 2Mg + O2 --> 2MgO
This is a chemical change, like any other burning reaction: magnesium is turned into magnesium oxide by burning reaction with oxygen (from air). 2Mg + O2 --> 2MgO
what is a chemical reaction of a rock
This is a chemical change. The reaction is: Mg + O ---> MgO
When magnesium metal wire is heated in open air, an oxidation-reduction reaction takes place between the magnesium and the oxygen in the air. The magnesium is oxidized as the oxygen is reduced. The product of this reaction is magnesium oxide, MgO. Note that this reaction can also be deemed a combustion reaction, which is a specific type of redox reaction which involves the production of heat and sometimes light.
the white bright light produced in fire works is due to burning of magnesium in the presence of oxygen magnesium+oxygen=magnesiumoxide