Oxides, Hydroxides, Hydrides,
and the
Strength of Acids and Bases
Consider Metal Hydroxides (soluble)
Clearly, these are electrolytes that produce stoichiometric quantities of OH- so they are all strong bases
Consider Non-Metal Hydroxides
These species are Acids because the weak bond is the O--H+ bond releasing H+ upon dissolution
Consider "organic" hydroxides
Don't forget 'Resonance'
Metal Oxides are STRONG Bases because they hydrate to form metal hydroxides
Non-metal Oxides 
Organic Oxides are not good acids or bases
Examples:
Ketones
Ethers
Epoxides
Non-Metal Hydrides (trends in acidity) HnX
Within a row (period) an increase in electronegativity of the element x increases
the acidity of the acid
Ka: NH3 < H2O < HF
Within a column (group), the Acidity of a non-metal hydride varies inversely with
the atomic/ionic radius of the non-metal element:
Ka: HF < HCl <= HBr
PJ Brucat // University of Florida