SUBSTANTE SIMPLE:
-metale: Hg, Zn, Al
-nemetale: Cl2, S, P4,O2
SUBSTANTE COMPUSE:
-oxizi: CaO, Al2O3, MgO, PbO2, F2O, NO, CuO, P2O3, CO2, SO3, Li2O,
-baze:Ca(OH)2, KOH, Fe(OH)3
-acizi: HCl, H3PO4, H3PO3, H2SO4 (sau H2SO3 nu se intelege), HI
-saruri: NaCl, MgSO4, CuCO3, KClO3, K2S, FeCl3, FeS
