Hydrogen from Latin means "generating water."This colorless light gas can be inflammable and explosive, if you combine it with oxygen or air.Hydrogen is non-toxic and readily soluble in ethanol, and metals such as platinum, iron, nickel, titanium and palladium.For the first time the evolution of hydrogen in the interaction of metals with acids, scientists have noted back in the 16-17 centuries, when the chemistry as a science in its infancy.
Hydrogen has three isotopes with its own name - against, deuterium and radioactive tritium.
In 1766, hydrogen was investigated by the English chemist and physicist Henry Cavendish, who called the gas fuel with air that the burning of allocated water.In 1783
, French chemist Antoine Lavoisier and engineer Jacques Meunier using special Gasometer was the synthesis of water from hydrogen.Scientists then decomposed into atoms steam using a hot iron, whereby it was revealed that the "fuel air" may be obtained from water, in which it belongs.
hydrogen in the universe
easiest gas is the most abundant chemical element in the universe - its share is 88.6% of all the atoms.Because hydrogen is the main part of the interstellar gas and the stars themselves.In terms of space monstrous temperatures hydrogen can exist only in the form of plasma, while interstellar space allows it to form a cloud of individual atoms, molecules and ions.These molecular cloud differ significantly in temperature, size and density.
hydrogen in the earth's crust is the tenth most abundant element - its mass fraction in it is only 1%.
role of the lightest gas in the nature does not determine the weight and the number of atoms, whose share - 17% of other elements.Hydrogen is in second place after oxygen with 52% of its atoms, so the value of hydrogen in chemical processes of the earth no less great than the oxygen.However, in contrast to air, giving life, which exists in the world in both the free and bound state, almost all of the earth is a hydrogen compound.In the form of a simple substance, which is part of the atmosphere, it is only a very small amount - 0.00005%.Also, there is hydrogen in the composition of almost all organic substances.It can be found in all living cells, where the number of atoms it accounts for about 63%.