Acetylene belongs to unsaturated hydrocarbons. Its chemical properties are defined by threefold communication. It is capable to react oxidations, replacements, accessions and polymerizations. Ethane is saturated hydrocarbon for which the natures of reaction of replacement on radical type, dehydrogenations and oxidations. At a temperature about 600 degrees Celsius it decays on hydrogen and eten.
All set of knowledge of the person of the environment surrounding him, the world, the earth, water, the nature and other things has to take accurate place in a complex of other sciences and disciplines. To reunite all knowledge of this world accumulated by mankind, the special discipline - natural sciences was created.