Animated video: 37 principles of chemical reactions and their dangers – Burning magnesium dropped into water

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Principle: At room temperature, magnesium can actually react with water, but unless it is in the form of magnesium powder, the reaction rate is very slow. At high temperatures, the two react violently to produce magnesium oxide and hydrogen. The hydrogen continues to burn, producing dazzling light and shadow effects along with the burning magnesium. Fun fact: This reaction is the basic principle of an experimental engine designed in Japan. Magnesium oxide, which is produced as a result of the reaction between magnesium and water, is decomposed back into elemental magnesium and oxygen under the action of a laser. The entire reaction consumes only water, while the laser is powered by sunlight. However, it seems that the deployment of this engine is still a long way off. Recorder: Periodic Videos Hazard: Medium. Magnesium emits high temperatures when burning, and its intense reaction with water can cause red-hot liquid magnesium to splash out, leading to burns.