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This is a bacteria called rusticles. This bacteria feeds off rusting metal.
Rust refers to a reddish or yellowish-brown flaky coating of iron oxide. Some substances that remove rust from a nail are white vinegar, lime and salt, baking soda and oxalic acid.
Rust is chemical weathering. It occurs when oxygen from the air reacts with a metal, typically with iron. This chemical reaction is called oxydation, and the product is what gives rust its reddish color.
The rocks and sediment on Mars are rich in iron oxide, which is essentially rust.
There's no real answer to that. Rust is a non-stoichiometric compound, which is a fancy way of saying that it doesn't have a fixed or simple formula. In addition, it's largely ionic so it doesn't have molecules anyway. Iron(III) oxide, which is rather like dry rust, is a giant ionic lattice containing Fe3+ and O2- ions.
rust appears as a reddish brown powder
Kind of reddish brown. FeO2 is commonly called rust.
rust colour
Rust or marroon, which is more purple then red
reddish-brown, copper, tan, rust, chestnut
Russet is a reddish brown color that is the same color of a russet potato. It can also be called rust, burnt sienna or earth brown.
Rust is the oxidation of iron. It is usually a reddish-brown and is fairly well attached
Tin and steel Iron rust is reddish
This is a bacteria called rusticles. This bacteria feeds off rusting metal.
You are correct.
Both, the reddish spots are rust and a chemical change. You will also find (after you have rubbed off the rust) that the surface of the knife is pitted. These pits are a physical changed caused by the chemical reaction.
More like a gold with a very very little light green.