Answer:
2Mg + O₂ ⇒ 2 MgO
Explanation:
When the MgO formation reaction is carried out experimentally, it can be seen that Magnesium a solid that has a metallic luster, when a flame is brought closer so that the oxidation reaction of the metal occurs, it is appreciated that a colored flame is produced white for a few moments (the duration of the flame depends on the initial amount of magnesium) and when the reaction finished, the magnesium became a white solid, opaque and very fragile. This is because <em>Mg reacted with oxygen and magnesium oxide formed</em>, which is the white solid.
<em>Synthesis reactions are those in which two or more reagents combine to obtain a new product compound</em>. The general formula for this type of reaction is:
A + B ⇒ C
In the case of the example of the statement, the reaction form of this synthesis would be:
2Mg + O₂ ⇒ 2 MgO
The equation is matched in such a way that there is the same amount of atoms of each species in both reagents and products, thus respecting the <em>principle of conservation of mass</em>.
<u><em>Clarification</em></u>: In the synthesis reaction, oxygen is placed in its molecular form (O₂), because the compound is naturally found, it is a simple substance. Magnesium, on the other hand, is found as a simple substance as atoms.
