Does all metals rust?

Answer 1

Gold does not rust.

Answer 2

"Rust" is a special term applied to the oxidation of iron only. Only iron "rusts", but other metals oxidize.

Oxidation is a chemical reaction between metals and oxygen. Oxygen is actually very damaging to metals.

Some metals oxidize throughout the total volume of metal. Rust is like that - let it rust long enough and it will dissolve away. Other metals don't do this - some, like aluminum, oxidize only through a very thin layer. Then the oxidized layer actually prevents the oxygen from reaching the aluminum under the oxidization, preventing further deterioration. Copper is like that too, which is why you can pull copper wear thousands of years old and clean it (remove the very top layers) to reveal an article that looks exactly like it did when it was made.

I don't know if all metals react with oxygen, but I would venture that the answer is yes. Some corrode all the way through, some develop a very thin protective oxidation layer, and the timescales may be a few years to 10s or thousands, but I think they all react in some way.

Answer 3

Metal That Does Not Rust

Answer 4

All metals does not rust.

Rust happens when things made from iron get left lying around in damp conditions and the iron gets reddish brown flakes on it.
Rust happens when iron water and oxygen mix together. It’s called oxidation.
Rust is a chemical reaction because it makes a new substance called Iron Oxide.
The oxidation makes the metal weak so it’s easy to break

Rust is the substance formed when iron compounds corrode in the presence of oxygen and water. It is a mixture of iron oxides and hydroxides. Rusting is a common term for corrosion, and usually corrosion of steel.

So, as per definition it is applies to iron and iron alloys.

Answer 5

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Most metals oxidize (combine with oxygen). Gold does not. Of the metals that oxidize, rust (iron oxide) only happens to metals containing iron. Copper and silver tarnish and can be polished to remove the oxide layer. Mercury is a metal (typically in liquid or gaseous state). Lead and aluminum also oxidize, but the compound is not called rust. Check the periodic table of elements.

Answer 6

If, you generally define 'rusting' as 'oxidising in a natural environment, the answer is 'no, there are metals that don't rust'. Examples : gold and the platinum group of metals, i.e., platinum. iridium, osmium, ruthenium, rhodium and palladium.
There are others too. The most common are those which are used for plating and protecting iron/steel from rusting : zinc, tin, nickel and chromium. Less common are : tungsten, titanium, vanadium, molybdenum and niobium. And hey ! In that case, don't forget mercury ! I'm not sure that's an exhaustive list, either.

Answer 7

Nope, rust is iron oxide which only happens in metals containing iron. this is any type of iron or steel. other metals will corrode over time but they do not rust. I hope this helps.

Answer 8

The reaction between oxygen, water and the metal is the reason.
Firstly, iron is oxidised to iron (II), when the metal is in contact with water.
Fe → Fe2+ + 2e−

The electrons reduce the oxygen and water to hydroxide ion.
e− + O2 + 2H2O → 4OH−

the hydroxide reacts with the iron to produce iron oxide.
Fe2+ + 2OH− → Fe(OH)2
4Fe(OH)2 + O2 → 2(Fe2O3.xH2O) + 2H2O
Iron (III) oxide is the rust, product of dehydration of iron (II) hydroxide.

Answer 9

Hi. Do you mean oxidize? I think the gold answer was correct about not oxidizing. Aluminum oxidizes, most other metals will also.

Answer 10

No, some corrode instead.