when wate ris adde to metallic oxide it forms a hard substance
With some oxides metallic hydroxides are formed.
Calcium oxide is not formed here, it is added.
copper oxide
Magnesium oxide
ferrous oxide
With some oxides metallic hydroxides are formed.
Calcium oxide is not formed here, it is added.
ball sacks
mageneium oxide
copper oxide
Magnesium oxide
ferrous oxide
No, aluminum oxide is not metallic. But aluminum is.
Metallic oxides would not normally decompose as such. Most can be smelted with some form of carbon, in which case carbon monoxide or carbon dioxide is formed.
lead oxide + carbon-> lead + carbon dioxide
The darks substance is copper oxide, formed when the copper reacts with atmospheric oxygen.
potassium oxide