Elemente si combinatii chimice

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• Spread of the elements in the atmosphere Gas shell surrounding the Earth is the atmosphere. Atmosphere is formed mostly from nitrogen (78%) and oxygen (21%), along with other elements in small quantities.
• • Spread of the elements in the crust Clarck: Percent of the element in the Earth crust is named clarck, after the name of the American geochemist F. W. Clarcke. The science having the subject of research the spread of the elements in the crust, with forming and compo<strong>si</strong>tion of the minerals is named geochemistry.
Page 1: Elements & chemical combinations Sp
Page 5 and 6: Mineral class Examples Minerals Nat
Page 8 and 9: • • • • • • 1s1 configu
Page 10 and 11: • • Obtaining of the hydrogen F
Page 12 and 13: Chemical properties of hydrogen. Re
Page 14: • • • Reduction character of
Page 17 and 18: • • • Alternative sources of
Page 19 and 20: • • • • Oxygen Oxygen is th
Page 21 and 22: Concentration of ozone as measured
Page 23 and 24: Ionomolecular species of oxygen Pro
Page 25 and 26: • • • • Oxidation of the ha
Page 27 and 28: • • Oxygen biochemistry Existen
Page 29 and 30: • • Covalent: - Are the oxides
Page 31 and 32: • MgAl2O4 - Spinel Spinel group -
Page 33 and 34: • • Bronzes Cathegory of non-st
Page 35 and 36: Water - chemical properties

Elemente si combinatii chimice

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