Which substance combines with iron in the presence of water to form rust
The substance that combines with iron in the presence of water to form rust is oxygen.
The substance that combines with iron in the presence of water to form rust is oxygen.
The substance that combines with iron in the presence of water to form rust is oxygen.
To get this answer, you can start by understanding the process of rusting. Rusting occurs when iron reacts with oxygen, usually in the presence of water or moisture. The chemical reaction between iron, water, and oxygen leads to the formation of a reddish-brown compound called iron(III) oxide, commonly known as rust.
So, in summary, the equation for the formation of rust can be represented as follows:
Iron (Fe) + Oxygen (O2) + Water (H2O) → Iron(III) Oxide (Fe2O3) (Rust)