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Strontium Metal that Absorbs XRAYS
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=28guL5UQfOQ
Patreon: https://www.patreon.com/Thoisoi?ty=h • Facebook: / thoisoi2 • Interesting page about chemical experiments: http://m.chemicum.com/ • Instagram: / thoisoi • So today I will tell you about one interesting metal - strontium. • Strontium is an alkaline earth metal that is in the second group of the periodic system of chemical elements. • This metal is fairly active, and thus it is stored in either kerosene or in mineral oil. • For you to see the surface of strontium a bit better I washed its pieces from the oil in ethyl acetate. • The strontium’s surface is black due to the fact that it was oxidised even while being in oil, and then it coated itself with a layer of strontium oxide and nitride. • Strontium is a pretty solid metal resembling lead solder, but some pieces can break apart because of the fragile crystal structure. • Strontium reacts with water forming hydrogen and strontium hydroxide. • Though the reaction is more intense in hot water. • If you set fire to a piece of strontium, it will first melt, and then ignite forming strontium oxide which can paint the flame of the burner in red. • Strontium reacts with acids, such as hydrochloric acid, forming strontium chloride and hydrogen. • With nitric acid, the reaction is also very rapid. • Like all of the active metals, strontium reacts with sulfur when ignited. • Nowadays strontium and its compounds are used in metallurgy, nuclear energy and medicine. Most often in everyday life we may encounter strontium compounds by using pyrotechnics. • Strontium salts are part of the lighting pieces and other pyrotechnic articles because of their capacity to stain the flame in bright red. • Also, most of the produced strontium compounds were previously used in the manufacture of glass for the old kinescope TVs and monitors because of the ability of strontium to absorb X-rays. • Warning! Some experiments are dangerous, do not try it by yourself!
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