Is rusting metal exothermic or endothermic?

Answer 1

It is an exothermic reaction. However, rusting of iron liberates only a small amount of heat as compared to other forms of metal corrosion.

Answer 2

Rusting metal is an exothermic process because it releases heat as it occurs. This process involves the reaction of iron with oxygen in the presence of water to form iron oxide (rust), and this reaction releases energy in the form of heat.

Answer 3

The combustion of steel wool creates a reaction that gives off heat. The release of heat makes the reaction exothermic.