Magnesium oxide doesn't exist in gaseous form. It occurs naturally in mineral form - as periclase. In refined form - it is a white solid
The word equation for the formation of magnesium oxide from magnesium metal and oxygen gas is: magnesium + oxygen → magnesium oxide.
Ozonated magnesium oxide is a form of magnesium oxide that has been exposed to ozone gas. This process is believed to increase the bioavailability and effectiveness of the magnesium. Traditional magnesium oxide supplements are not exposed to ozone gas and may have lower absorption rates in the body.
When magnesium oxide is sufficiently heated, oxygen gas is evolved.
... hydrogen gas. This is a displacement reaction in which magnesium displaces hydrogen in water to form magnesium oxide and hydrogen gas.
Hydrogen gas is released when calcium and water react.
When magnesium is heated, it undergoes a chemical reaction with oxygen in the air, resulting in the release of a gas called magnesium oxide (MgO).
Magnesium oxide forms when magnesium metal reacts with oxygen gas to produce magnesium oxide. The chemical equation for this reaction is 2Mg + O2 -> 2MgO.
When carbon dioxide gas is blown into a solution of magnesium oxide, it will form magnesium carbonate as a product. This reaction involves the carbon dioxide reacting with the magnesium oxide to form the magnesium carbonate.
Magnesium carbonate
The chemical reaction between magnesium and oxygen is called magnesium oxide formation. This reaction occurs when magnesium metal reacts with oxygen gas to produce magnesium oxide, which is a white powdery substance. The chemical equation for this reaction is 2Mg + O2 -> 2MgO.
MgCO3 --> MgO + CO2(g) Magnesium oxide and gaseous carbon dioxide
When water is added to magnesium oxide, magnesium hydroxide is produced. This reaction also releases heat.