what happends when we burn magnesium metal
When magnesium metal is burned, a chemical reaction called combustion occurs, resulting in the production of magnesium oxide (MgO) and a significant amount of heat and light. The reaction can be represented by the following equation:
2Mg(s) + O2(g) → 2MgO(s)
To understand what happens during the burning of magnesium metal, let's break it down step-by-step:
1. Preparation: Obtain a strip of magnesium metal and light it using a flame source (such as a Bunsen burner or a lighter).
2. Ignition: Once the magnesium strip is ignited, it undergoes oxidation. Oxygen molecules (O2) from the air react with the magnesium atoms (Mg) on the metal surface.
3. Combustion: The high temperature of the flame provides the energy required for the reaction to occur. The magnesium atoms lose two electrons and form magnesium ions (Mg2+), while the oxygen molecules gain these electrons to form oxygen ions (O2-).
4. Formation of magnesium oxide: The magnesium ions combine with the oxygen ions to form solid magnesium oxide (MgO). This reaction is highly exothermic, meaning it releases a large amount of heat and light energy.
5. Bright white light and intense heat: The combustion of magnesium metal produces a brilliant white light due to the high temperature and energy released during the reaction. This light emission is what makes burning magnesium visually striking.
6. Ash residue: After the burning process, a white powdery substance, which is the magnesium oxide, remains. This ash can easily crumble into a powder when touched.
It's important to note that burning magnesium metal can be extremely bright and hot, and it should be done with caution and appropriate safety measures.