Răspuns:
1.
Li₂O
Ba(OH)₂
Al₂(SO₄)₃
NH₃
CCl₄
2.
Cu(OH)₂
Ag₂S
Pb(NO₃)₂
3.
SO₂ oxid
Fe(OH)₂ sau Fe(OH)₃ baze; Fe(OH) nu exista
Al₂O₃ oxid; Al₃O₂ este scris gresit
MgCl₂ sare
Al(OH)₃ baza
K₂O oxid
H₂SiO₃ acid
H₂SO₃ acid
