No, aluminum oxide is colorless.
rose oxide
red paint
No, it is either a red powder (cuprous oxide) or a black powder (cupric oxide)
its red because of oxygen is getting in to in
Its the Iron Oxide which is rust that makes it red
Copper has two oxides. Copper (I) oxide is red, while Copper (II) oxide is black.
Al ions are very small due to their high charge-surface area ratio , that's why they're so small. these ions gather at surface of the metal and react with O2 in air or water forming Be(O2)2 compound, making a shield to protect other atoms from the o2 in air or water. That's why aluminum foil doesn't react with water. Same applies to Be.
Iron oxide (ferric oxide) is the only red pigment I can think of. There are also a whole range of synthetic red organic pigments. Toluidine Red is one such example
the black iron oxide has reacted with carbon and other impurities
Cu2O (Copper(II) Oxide) is a Red Powder. CuO (Copper(I) Oxide) is a Black Powder.
Pb3O4
red paint