Chemical reaction of magnesium hydroxide when heated?

When magnesium hydroxide is heated, it undergoes a chemical reaction known as thermal decomposition. This reaction breaks down magnesium hydroxide into magnesium oxide and water vapor. The balanced chemical equation for this reaction is: Mg(OH)2(s) → MgO(s) + H2O(g). This process is endothermic, meaning it absorbs heat energy from its surroundings.