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Why does burning magnesium explode when sprinkled with water?
Magnesium reacts with water to produce hydrogen and a lot of heat. Metallic magnesium reacts only slowly, but magnesium vapour, produced when Mg burns, reacts extremely quickly due to the high temperature and efficient mixing, and produces heat very rapidly. Hence the explosion when water is added to burning magnesium.
Is there an way water can burn or cause fire?
2015年11月7日 · Water can contribute to a fire through other reactions like the reaction of water with reactive metals (like alkali metals, magnesium and others), which generates flammable hydrogen ($\mathrm{H_2}$) but that's not really the water itself contributing to the fire but the rather hydrogen catching fire. Water itself can certainly not burn.
Why does the humidifier make a stove's flame orange?
2018年11月18日 · $\begingroup$ @ToddWilcox It could certainly be improved, but this experiment clearly demonstrates that it is possible to induce sodium line emission in a gas flame to the extent that it appears orange by spraying the air with tap water.
How does water help extinguish fire? - Physics Stack Exchange
2014年10月14日 · $\begingroup$ The issue with liquid fires isn't just that water may "increase the affected area". If the burning liquid is substantially above its auto-ignition point, the evaporation of water may convert the flammable liquid to an aerosol which has been cooled slightly, but is still hot enough to ignite on contact with air, not only spreading the …
heat - Is fire plasma? - Physics Stack Exchange
Firstly, 'Fire', according to numerous comments and answers [here][1] is a 'process', in which case, the answer to the question will be 'no', since plasma is a state of matter.
thermodynamics - Why do different materials have different …
2019年1月30日 · $\begingroup$ so the element's atom mass matter right? for example the amu for copper is 63.5 and the amu for gold 197 and the specific heat capacity for each of the element is 376 and 126 respectively.
pressure - What are the differences between the terms flammable ...
In contrast, non-flammable means "not capable of burning". To avoid confusion, it is recommended that use of the term inflammable be avoided, since the prefix in- here does not mean "not". This generally makes sense and sounds like good advice, but as I was reading a journal paper today, I came across a paragraph using these terms.
photoelectric effect - What's the difference between the work …
2015年9月5日 · In a particular textbook, the work function of a metal (in the context of the photoelectric effect) is defined as: the minimum amount of energy necessary to remove a free electron from the surfa...
Why is it impossible for the reactor of the nuclear power plant to …
2022年5月26日 · In brief, the lack of a containment structure surrounding any nuclear fission chain reaction will lead to the core (nuclear material) either breaking up or quickly decaying sufficiently that the chain reaction is unsustainable.
Why Rutherford used only gold foil in his famous gold foil …
2016年6月5日 · Yes, it is correct that Rutherford used other metallic atoms instead of gold. From using other metallic atoms, he drew the following conclusion that there shall be no change in his prior observations, if and only if the malleability of the metal is sufficive enough for the alpha particles to penetrate through, otherwise there shall be a …