Answer:The reactants are Oxygen and iron.
The product is Iron oxide.
Explanation:
When iron and oxygen reacts with each other produce iron oxide which reddish brown in color. This reddish brown iron oxide is often refereed to as Rust.
[tex]4Fe+3O_2\rightarrow 2Fe_2O_3(\text{reddish brown})[/tex]
The Reactants are iron and oxygen.
The product is iron oxide