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ID number:220929
 
Evaluation:
Published: 27.05.2008.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Skābeklis ir elements ar atomnumuru 8 un attēlo ar simbolu O. Šis ir ļoti aktīvs nemetālu 2 grupas 2. elements, kas viegli veido savienujumus ar gandrīz visiem pārējiem elementiem. Standarta apstākļos skābeklis ir divatomu gāze, kura ir bezkrāsaina, bez smaržas, bez garšas un kuras formula ir O2. Skābeklis it trešais izplatītākais elements visumā.
Visas lielākās molekulu struktūras, tādas kā proteīni, ogļhidrāti un tauki, satur skābekli, kā arī skābeklis atrodas visos tajos nemetālu savienojumos, kas veido dzīvnieku zobus un kaulus. …

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