Isn't H2O (water) necessary as well?
2007-01-13 13:08:11 · 6 answers · asked by P!NK 3 in Science & Mathematics ➔ Other - Science
just iron and oxygen...water (especially salt water, because it has ions) is just a catalyst (makes it happen faster!)
2007-01-13 13:14:00 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Rust is metal oxide. It forms where raw metal meets air. Water helps but its not essential.
Aluminium forms an oxide layer, but it usually doesn't flake off. If mercury is dropped on it, however, the result can cause rust "holes". This is why mercury thermometers aren't allowed on aircraft (with aluminium frames).
2007-01-13 22:10:14 · answer #2 · answered by Alan 6 · 1⤊ 0⤋
Fe O2 ( iron oxide) a mineral in the Earth's crust.
and H2O along with Oxygen.
2007-01-13 21:17:41 · answer #3 · answered by Joe B 1 ca no B 1 · 0⤊ 0⤋
Oxygen causes rust. or more so the ellement oxidizing. Water isn't needed but helps. Bleach helps much more.
2007-01-13 21:11:50 · answer #4 · answered by emkay4597 4 · 0⤊ 0⤋
Rust is the slow oxidation of iron or other similar metals. It can occur anywhere oxygen is present, like air or water.
Some debunking:
Rust can occur in deairated, distilled water. by the reaction:
2 Fe + 3H2O -> Fe2O3 + 3H2
2007-01-13 21:11:58 · answer #5 · answered by walter_b_marvin 5 · 0⤊ 1⤋
water and oxygen exposed to metal produces rust and even if it doesnt rain there is still water in the air
2007-01-13 21:48:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋