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The tar blocks oxygen from getting to the iron. But tar is such a nasty substance! There are a lot of better rust proofers available for iron. A lot of people use oils (the process of seasoning a cast iron pan involves heating the pan very hot then applying fat to it, allowing the fat to work itself into the pores of the iron), waxes or just paint.

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What component of the atmosphere causes iron to rust and paint to dull?

The component of the atmosphere that causes iron to rust and paint to dull is oxygen. When iron is exposed to oxygen and moisture, a chemical reaction called oxidation occurs, leading to the formation of iron oxide, or rust. In the case of paint, oxygen can react with components of the paint, causing it to lose its shine and appear dull over time.


Does paint protect iron from ruse?

Yes, paint can protect iron from rust by acting as a barrier between the iron and moisture in the air. However, if the paint gets chipped or scratched, it can expose the iron to oxygen and water, leading to rust formation. Regular maintenance and touch-ups are important to ensure continued protection.


Why does the surface of mars appear red?

It's covered in rust (Iron oxide)


How do paint and oil prevent iron grills from rusting?

rust is also called iron oxide forms when iron reacts with oygen ...the paint coats the iron therefore preventin its contact wid oygen


What in paint helps iron not rust?

Because paints form a protective coating on iron, impermeable to water and oxygen.


How does paint stop rust?

Rusting is caused due to exposture of iron to moisture. When iron articles are painted, it is not exposed to the atomospheric moisture. This is how paint stops rusting


What causes iron to rust and how can it be prevented?

Iron rusts when it reacts with oxygen and water in the air, forming iron oxide. To prevent rust, iron can be coated with a protective layer, such as paint or a rust-resistant coating, or kept away from moisture and oxygen by using a process like galvanization.


Why doesn't a coat of paint stop the rusting process on iron?

paint won't stop rust, it only prevents it if apllied to clean metal.


What material is body of a water tap made from and why?

Usually iron covered in enamel or chrome to rust-proof it.


Why doesn't sprite rust iron?

it probably will over a long time, but it doesnt have much oxygen cause the water is diluted so it wont rust quickly


How fast a nail will rust by water?

This really depends on the concentration of impurities in water. More the impurities, faster it will rust the iron nail. To reduce rusting of any iron the best way is to paint the nail.


Why does a material made of iron needs to be painted?

Because iron is very prone to rust. Paint adds a protective layer to prevent rusting.