i always thought it was a mineral or rock, someone told me it was a metal, anyone know?
You can get a hydrated oxide, as in hydrated iron oxide which is rust.
Yes you are right but up to a certain limit. Most of the reactive metal oxides would react with water to form hydroxides. Less reactive oxides may react with warm (or hot) water. some may react with steam. But there are some Oxides (such as oxides of copper) which do not react even with steam. Such oxides will react under special conditions of temperature and pressure. But finally, will form a hydroxide. So, talking in general, you are right.
This Site Might Help You. RE: Do Metal Oxides + Water make a Metal Hydroxide? Basically, I was wondering if this is a rule in chemistry; if you add water to a metal oxide you will always get a metal hydroxide, e.g: CalciumOxide + Water ----> CalciumHydroxide
Metal oxides don't always form hydroxides with water. IT DEPENDS ON THE SOLUBILITY OF METAL OXIDES AND THE REACTIVITY OF METAL. 1)High reactivity metals form oxides soluble in water which give rise to metal hydroxides. Na2O + H2O --> 2NaOH K2O + H2O --> 2KOH CaO + H2O --> Ca(OH)2 2) Medium reactivity metals form sparingly or less soluble oxides. Al2O3 -----H2O-------> Al(OH)3 3) Low reactivity metal oxides are insoluble in water. CuO +H2O --> Cu(OH)2
