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   Why do metals rust?

   • Different metals react differently with oxygen, water and dilute acid, allowing a reactivity series to be deduced. A metal object corrodes when it is exposed to the open air and bad weather. If the metal is iron, we call this change rusting, and the weaker, flaky brown compound that is formed is rust. What causes rust?

   Properties of metals - National 4 Chemistry Revision - BBC

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   How does rust occur?

   • Rust is a naturally occurring phenomenon when certain metals are exposed to oxygen and water for a length of time. The actual chemical make-up of rust is 4Fe + 3O2 = 2Fe2O3. The only metals that rust are steel and iron. Other metals may become corroded but they do not rust.

   How Does Rust Form? | Sciencing

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   How do iron and steel rust?

   • Here is the word equation for the reaction: iron + water + oxygen → hydrated iron (III) oxide Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. In the experiment below, the nail does not rust when air (containing oxygen) or water is not present:

   Redox, rusting and iron - (CCEA) Rusting - BBC

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   What causes rust in stainless steel?

   • Rust is brittle, fragile, progressive, and weakens iron and steel. To prevent the rusting of iron and its alloys, the surface needs to be separated from air and water. Coatings can be applied to iron. Stainless steel contains chromium, which forms an oxide, much like how iron forms rust.

   The Chemical Reaction That Causes Rust - ThoughtCo

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   What is rusting a metal?

   • Over time, the oxygen combines with the metal, forming new compounds collectively called rust, in a process called rusting. Rusting is an oxidation reaction specifically occurring with iron. Other metals also corrode via similar oxidation, but such corrosion is not called rusting. The main catalyst for the rusting process is water.

   Rust - Wikipedia

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   Why does iron rust?

   • The experiment shows that water and oxygen are required for iron to rust. No rust. Boiled water has no oxygen and oil stops new oxygen entering. Severe rust. Salt water is an electrolyte which conducts ions, speeding up rusting. Rust. Air and moisture cause normal rusting No rust. Calcium chloride dries out the air. No rust.

   Properties of metals - National 4 Chemistry Revision - BBC

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2. www.thoughtco.com › how-rust-works-608461The Chemical Reaction That Causes Rust - ThoughtCo

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   Oct 3, 2024 · Rusting occurs when iron or its alloys are exposed to moist air. The oxygen and water in air react with the metal to form the hydrated oxide. The familiar red form of rust is (Fe 2 O 3), but iron has other oxidation states, so it can form other colors of rust.

   • Author: Anne Marie Helmenstine, Ph.D.

3. en.wikipedia.org › wiki › RustRust - Wikipedia

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   Rust is permeable to air and water, therefore the interior metallic iron beneath a rust layer continues to corrode. Rust prevention thus requires coatings that preclude rust formation.

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5. www.bbc.co.uk › bitesize › guidesRedox, rusting and iron - (CCEA) Rusting - BBC

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   Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. In the experiment below, the nail does not rust when air (containing oxygen) or...

6. sciencing.com › rust-form-4564062How Does Rust Form? | Sciencing

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   Apr 24, 2017 · Rust is a naturally occurring phenomenon when certain metals are exposed to oxygen and water for a length of time. The actual chemical make-up of rust is 4Fe + 3O2 = 2Fe2O3. The only metals that rust are steel and iron.

   • Author: Julie Richards

7. www.bbc.co.uk › bitesize › guidesCorrosion - Corrosion of metals - GCSE Chemistry (Single ...

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   Corrosion. happens when a metal continues to oxidise. The metal becomes weaker over time, and eventually all of it may become metal oxide. Rusting. is a specific example of corrosion, which...

8. www.wonderopolis.org › wonder › why-do-some-things-rustWhy Do Some Things Rust? - Wonderopolis

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   Sep 11, 2012 · Rust occurs when iron or its alloys, such as steel, corrode. The surface of a piece of iron will corrode first in the presence of oxygen and water. Given enough time, any piece of iron will change entirely into rust and disintegrate.

9. www.bbc.co.uk › bitesize › guidesCorrosion - Properties of metals - National 4 Chemistry ... - BBC

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   A metal object corrodes when it is exposed to the open air and bad weather. If the metal is iron, we call this change rusting, and the weaker, flaky brown compound that is formed is rust.