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because they do
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∙ 11y ago
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What does rusting need?
For something to rust you need oxygen and water. Rust specifically relates to iron (or iron products such as steel); it is iron oxide. When the metal comes into contact with oxygen disolved in water the iron in the metal reacts with the oxygen disolved in the water to form iron oxide - rust. This is why most metals are protected, to stop water and oxygen getting into contact with the metal and causing corrosion i.e. rust. Common methods of protection include galvanising, painting and coating.
Is an important use of cast iron?
Examples: cooking wares, pipes, bulidings structures.
How does sacrificial protection work?
Sacrificial protection is basically attaching a piece of metal that is more reactive that iron to the object made of iron. This more reactive metal, commonly magnesium or zinc, will corrode in the place of iron. That is, the more reactive metal will feed the iron with electrons each time the iron is oxidised to form iron ions, thus reverting it to iron once again instead of letting it become iron hydroxide (rust). Thus, the more reactive metal is sacrificed for the iron.
A type of connective tissue that provides primary support and protection for body structures is?
osseous tissue
What is cathodic protection used for?
Cathodic protection is a way of preventing or controlling corrosion of a metal structure.
Why iron structures need protection from corrosion while aluminium structure do not?
Because aluminium oxide is strong and forms a coating over the aluminium, whereas iron oxide (rust) flakes away.
What do structures do paramecia use for protection?
trichocysts
What the is the effects of corrosion?
Destruction of metallic (especially from iron or iron alloys) structures.
What ways can rust harm iron?
Iron structures and objects are destroyed in time.
Air rade shelters?
Air raid shelters, also known as bomb shelters, are structures that provide protection from an air attack. These structures do not offer protection from ground attacks.
What are the body structures in cat that they use for protection?
teeth and claws
What is beach protection?
It Can Reduce Storm Damage To Coastal Structures.
Name some common problems caused by rusting of iron?
The most important is the destroying of iron structures.
What differences are in the properties of iron and rust?
Rust is the oxide of iron. It is usually red in color, flakey, and provides no protection to the underlying iron.
The need for complex data structures?
Explain the need for complex data structures
What structures or characteristic of rose that protect them selves from their enemy?
Thorns and Spines for protection
What does rusting need?
For something to rust you need oxygen and water. Rust specifically relates to iron (or iron products such as steel); it is iron oxide. When the metal comes into contact with oxygen disolved in water the iron in the metal reacts with the oxygen disolved in the water to form iron oxide - rust. This is why most metals are protected, to stop water and oxygen getting into contact with the metal and causing corrosion i.e. rust. Common methods of protection include galvanising, painting and coating.
