Rusting (1)

Chemistry

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Definition of rusting of iron

A chemical process that occurs when iron is exposed to oxygen and water, and undergoes a redox reaction

The iron rust effect (1)

A layer of reddish-brown iron oxide is formed on the iron surface

The iron rust effect (2)

Rusting occurs continuously and damage the structure of the iron

The properties of rusty iron

Easily cracked and permeable

Definition of corrosion of metal

A redox reaction where the metal is oxidised spontaneously when the metal atoms release electrons to form metal ions

The properties of a layer of aluminium oxide

Hard and non porous, protecting the aluminium underneath from corroding

Corrosion of metal

In general, the more electropositive the metal is, the easier it is for the metal to corrode

Iron rusting as a redox reaction (1)

Rusting of iron occurs with the presence of water and oxygen

Iron rusting as a redox reaction (2)

Rusting of iron is a redox reaction where oxygen acts as an oxidising agent, while iron acts as a reducing agent

Iron rusting as a redox reaction (3)

When iron comes into contact with water and is exposed to oxygen, a simple chemical cell is formed

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