Question

an iron fence reacts with oxygen in the air to form rust.
The formation of rust is an oxidation-reduction reaction, and what other type of reaction?
if im right then its a decomposition but if im wrong can someone give me a hint

Answer 1

i think synthesis

Answer 2

I need to be absolutely sure though

Answer 3

decomposition is breaking down of a compound
but in here Fe reacts with O2 and forms Fe2O3
which means its synthesis

Answer 4

thnx

Answer 5

no problem)