Mg can react in cold water, but it reacts only very slowly. If you look closely, you can actually see bubbles. Heating can accelerate the reaction rate. Mg+2H20=Mg(OH)2+H2↑. In 1808, David of the United Kingdom prepared magnesium metal by reducing magnesium oxide with potassium. It is a light silver-white alkaline earth metal with active chemical properties. It can react with acids to generate hydrogen and has certain ductility and heat dissipation properties. Magnesium is widely distributed in nature and is one of the essential elements of the human body.
Detailed information
1. It has relatively strong reducing properties, can react with boiling water to release hydrogen, and can produce dazzling white light when burned. Magnesium and fluorine It does not react with chemicals, fluorhyd acidric and chromic acid, and is not corroded by caustic alkalis, but it is easily soluble in organic and inorganic acids. Magnesium can combine directly with nitrogen, sulfur and halogens etc. p>
Including organic chemicals, including hydrocarbons, aldehydes, alcohols, phenols, amines, lipids, and most oils, react only slightly, if at all, with magnesium. However, it reacts more violently with halogenated hydrocarbons under anhydrous conditions (generating Grignard reagents). Magnesium can react with carbon dioxide to burn. Therefore, carbon dioxide fire extinguishers cannot be used to extinguish fires burning magnesium.
2. Reaction with non-metallic elements: 2Mg+O?==ignition==2MgO
3. Reaction with water: Mg+2H2O (hot water)==Mg ( OH)?+H?↑
4. Reaction with acid: ?Mg+2HCl=MgCl?+H?↑
5. Reaction with oxide: 2Mg+ CO?=ignition= 2MgO+C
Baidu Encyclopedia_Magnesium
Magnesium can react with hot water. The phenomenon is that the mass of magnesium continues to decrease, and some ((a little) bubbles. adhere to the wall of the beaker and the iron can react with water vapor under high temperature conditions to generate oxide ferric and hydrogen if the silvery white iron powder turns into black powder No!