Question

An iron fence is left unpainted, and it reacts with the oxygen in the air, forming rust. The formation of rust is an oxidation-reduction reaction, but it is also an example of a(n) _________ reaction

Answer 1

Fe + O2 -> Fe2O3

you're combining them, and your making something new, hence it's a ____ rxn.

Answer 2

it is a synthesis reaction as it synthesises\[fe _{2}o _{3}\]