Because some metals react with oxygen and some others dont and that depends on there position in the periodic table
http://wiki.answers.com/Q/What_metals_don't_corrode_and...
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All of the metals you mention corrode. "Rusting" is a word which is reserved for iron oxidizing, but the other metals will also form oxides. There are many different kinds of steels, some which rust more easily than others.
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van.physics.illinois.edu/qa/listing.php?id=497
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Corrosion is the primary means by which metals deteriorate. Most metals corrode on contact with water (and moisture in the air), acids, bases, salts, oils, aggressive metal polishes, and other solid and liquid chemicals.
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www.corrosion-doctors.org/Principles/Theory.htm
www.corrosion-doctors.org/Principles/Theory.htm
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All metals exhibit a tendency to be oxidized, some more easily than others. A tabulation of the relative strength of this tendency is called the galvanic series. ... The driving force that causes metals to corrode is a natural consequence of their temporary existence in metallic form.
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www.corrosion-doctors.org/Definitions/why-corrosion.htm
www.corrosion-doctors.org/Definitions/why-corrosion.htm
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Metals corrode because we use them in environments where they are chemically unstable. Only copper and the precious metals (gold, silver, platinum, etc.) are found in nature in their metallic state.
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corrosion.ksc.nasa.gov/corr_metal.htm
corrosion.ksc.nasa.gov/corr_metal.htm
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For science project, student needs to know what metals corrode fastest ... I am a student researching corrosion. I have only just started and I can't find out which metals corrode and which don't. I need 4 of each for my essay. if you can help me please dp thanx.
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www.finishing.com/139/49.shtml
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Science fair project: Why do metals corrode? ... I am doing a science fair project on which metal is the most resistant to corrosion. I am in 7th grade. I was wondering why do metals corrode. ... Why do metals corrode? I'm work on a project, "Effect and Control of corrosion". I'm a 4th year student of the university...
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www.finishing.com/432/85.shtml
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Understanding How Metals Corrode Can Help Build Better Structure ... Except for the "precious" metals, such as gold, metals in the refined form are inherently unstable. This instability is what drives the process of corrosion, and it results from the fact that a refined metal is continually trying to revert to its...
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www.mtec.or.th/th/research/famd/corro%5Chowmetals.htm
www.mtec.or.th/th/research/famd/corro%5Chowmetals.htm
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If so, chances are that the culprit was rust. Mailboxes, swing sets, lamps, cars, railings, and just about anything else made from metal are subject to the perils of rusting—a deteriorating metal condition. You've undoubtedly had some exp...
http://www.infoplease.com/cig/science-fair-projects/met...
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