Chemistry Blog: Why does iron rust
Claudia Morales 3/22/19
Why Does Iron Rust
Rust forms from a compound called iron oxide. Its formed when iron and oxygen is exposed to moisture in the air. Its very hard to find very pure iron because its always exposed to oxygen and at least some moisture in the air.
Iron can also rust in chloride. Pillars under a pool would turn a green color instead of the brown color. If iron meets with its alloys like steel and corrode, the pieces of iron would rust and disintegrate when its meet with water and then left alone for a long while.
The rust process is a combustion reaction, kind of like fire. But the process is way longer that fire turning in to a flame. There are things that speed up the process of rusting and things that slow it down such as water speeding it up and galvanization slows it down. Galvanization is coating an object with zinc so that the iron wont react with anything. Paint can also protect iron from rusting.
Iron can also rust in chloride. Pillars under a pool would turn a green color instead of the brown color. If iron meets with its alloys like steel and corrode, the pieces of iron would rust and disintegrate when its meet with water and then left alone for a long while.
The rust process is a combustion reaction, kind of like fire. But the process is way longer that fire turning in to a flame. There are things that speed up the process of rusting and things that slow it down such as water speeding it up and galvanization slows it down. Galvanization is coating an object with zinc so that the iron wont react with anything. Paint can also protect iron from rusting.
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