Răspuns :
solubile-zahar,sare,amoniac,praf de copt,azot
insolubile-bronz,potasiu,alama,diamant,aur
insolubile-bronz,potasiu,alama,diamant,aur
insolubile H2, O2, Cl2, Br2, He
solubile NaCl, HCl, KNO3, MgSO4, K2SO4
solubile NaCl, HCl, KNO3, MgSO4, K2SO4