What conditions cause rust to occur?

Rust is the substance formed when iron compounds corrode in the presence of oxygen and water. It is a mixture of iron oxides and hydroxides. Rusting is a common term for corrosion, and usually corrosion of steel.

Iron is found naturally in the ore haematite as iron oxide, and metallic iron tends to return to a similar state when exposed to air, (hydrogen, oxygen, nitrogen, etc.) and water. This corrosion is due to the oxidation reaction when iron metal returns to an energetically favourable state. Energy is given off when rust forms. The process of rusting can be summarized as three basic stages: The formation of iron(II) ions from the metal; the formation of hydroxide ions; and their reaction together, with the addition of oxygen, to create rust.

Conditions For Rusting Of Iron

I have a old motorbike and I know that if you put oil, usually with a oily rag or a spray such as WD40, on the chrome or metal work it prevent`s the air getting to the metal causing rust or corrosion. It is also believed that the same particles in the air that cause rust also add to the human aging proses. So there.

Rust is the common name for a very common compound, iron oxide. Iron oxide, the chemical Fe2O3, is common because iron combines very readily with oxygen -- so readily, in fact, that pure iron is only rarely found in nature. Iron (or steel) rusting is an example of corrosion -- an electrochemical process involving an anode (a piece of metal that readily gives up electrons), an electrolyte (a liquid that helps electrons move) and a cathode (a piece of metal that readily accepts electrons). When a piece of metal corrodes, the electrolyte helps provide oxygen to the anode. As oxygen combines with the metal, electrons are liberated. When they flow through the electrolyte to the cathode, the metal of the anode disappears, swept away by the electrical flow or converted into metal cations in a form such as rust.

The rusting of iron is a chemical reaction and oxygen and water must be present for it to rust. It involves the loss and gain of electrons between reactants. The chemical compounds found in liquids like acid rain and seawater speed up the process of rusting on iron.

This is an excellent question. What causes decay? Rust, decay, degeneration are all caused degeneration of the atom.

This is chemical in nature, as the atomic structue of whatever substance is slowly broken down by oxygen, and sunlight. Also, i believe that certain vibrations emanating throughout the universe are responsible for decay and breaking down certain atomic structures.

depends on the metal, the humidity, water. The best place to store something big like a car would be out in the desert, that's where they keep the air planes at.

rust occurs when iron is in constant contact with atmosphere. humidity and other elements also act with Fe element causing it to disintegrate

rust (scientific name = iron oxide) occurs when a metal substance hits oxygen (or water- H2O)

Direct exposure of metal to air causes oxidation of iron. To awoid it, cars are painted.