Question

rusting on the surface of iron involves

Answer 1

Rust is usually used to refer to a very common, reddish-brown compound called iron oxide (Fe2O3). Iron oxide is formed when iron and oxygen react in the presence of water or moisture in the air. Iron oxide is very common, because iron reacts easily with oxygen in the air.The rusting of iron is a chemical change because it is two substances reacting together to make a new substance. When iron rusts, iron molecules react with oxygen molecules to make a compound called iron oxide. Rusting would only be a physical change if iron molecules remained pure iron throughout the process.
Several forms of rust are distinguishable visually and by spectroscopy, and form under different circumstances.Rust consists of hydrated iron(III) oxides Fe2O3. nH2O, iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3. Rusting is the common term for corrosion of iron and its alloys, such as steel.Rusting is a chemical process, which is common with the metals containing iron. In other words, the corrosion process taking place when there is iron, it is known as rusting. ... In the presence of oxygen and moisture or water, iron undergoes this reaction and form a series of iron oxide.