prezentatsiya element "bariy"

chto takoe bariy? puteshestvie po vajnomu elementu otkroyte dlya sebya bariy — shelochnozemelniy metall, kotoriy igraet neojidanno vajnuyu rol kak v prirode, tak i v jizni cheloveka. mi issleduem ego svoystva, znachenie dlya organizma i primeneniya, kotorie delayut ego nezamenimim, no poroy i opasnim elementom. 1 bariy: obshie svedeniya i otkritie bariy (ba) — myagkiy, serebristo-beliy shelochnozemelniy metall. vpervie on bil videlen serom xamfri devi v 1808 godu. nazvanie elementa proisxodit ot grecheskogo slova "barys", chto oznachaet "tyajeliy", otrajaya visokuyu plotnost ego mineralov, takix kak barit. iz-za svoey visokoy reaktsionnoy sposobnosti bariy nikogda ne vstrechaetsya v prirode v chistom vide, tolko v sostave soedineniy. on bistro okislyaetsya na vozduxe i burno reagiruet s vo...

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