What are some common examples of metal oxides?

Common examples of metal oxides include iron(III) oxide, aluminium oxide, magnesium oxide, and copper(II) oxide.

Iron(III) oxide, also known as rust, is a reddish-brown compound that forms when iron reacts with oxygen in the air. It's a common example of a metal oxide and is often used in the manufacture of paints, cosmetics, and other pigments. Iron(III) oxide is also used in the production of iron and steel.

Aluminium oxide is a white or colourless crystalline compound that occurs naturally in various forms of bauxite. It's used in the production of aluminium metal, as an abrasive due to its hardness, and as a refractory material due to its high melting point. Aluminium oxide is also used in the manufacture of ceramics and glass.

Magnesium oxide is a white solid that occurs naturally as the mineral periclase. It's used in the production of refractory bricks for furnaces, in agriculture to improve acidic soils, and in medicine as a laxative and antacid. Magnesium oxide is also used in the manufacture of rubber, plastics, and ceramics.

Copper(II) oxide is a black solid that occurs naturally as the mineral tenorite. It's used in the production of copper, in the manufacture of batteries, and as a pigment in ceramics. Copper(II) oxide is also used in the creation of glass and enamels.

These are just a few examples of metal oxides, which are compounds that form when a metal reacts with oxygen. They have a wide range of uses in various industries, from manufacturing to agriculture to medicine.