Question

The following reaction shows the process of rusting. 4Fe + 3O2 2Fe2O3 This chemical reaction should be classified as _____.

Answer 1

Synthesis.  Which is "Noun. (plural syntheses) The formation of something complex or coherent by combining simpler things. (chemistry) The reaction of elements or compounds to form more complex compounds.".....According to www.dictionary.com.

Answer 2

Answer: Synthesis reaction

Explanation:

Corrosion is the process of slow eating away of metal due to attack of atmospheric gases on the surface of metal resulting into formation of compounds such as oxides, sulfides , carbonates etc is called as corrosion.

Corrosion of iron is called as rusting. Rust is hydrated ferric oxide $(Fe_2O_3.xH_2O$.

Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

$4Fe+3O_2\rightarrow 2Fe_2O_3$