When magnesium peroxide, , decomposes, it typically produces magnesium oxide and oxygen gas , while generating hydrogen peroxide as an intermediate. This reaction showcases the fascinating interplay between metallic compounds and peroxide chemistry, leading to the release of useful gases and forming oxides.

In real-world applications, magnesium peroxide is a promising candidate for environmental cleanup, particularly in removing pollutants due to its ability to release reactive oxygen species. This makes it valuable in wastewater treatment and soil remediation processes, where its oxidative properties can break down toxic contaminants effectively while minimizing environmental impact.