Question

iron reacts with oxygen in a chemical hand - warmer. how should this reaction be categorized? as an exothermic process because it releases heat as an endothermic process because it releases heat as an exothermic process because it absorbs heat as an endothermic process because it absorbs heat

Explanation:

Exothermic processes release heat. Hand - warmers work by releasing heat, so the iron - oxygen reaction is exothermic.

Answer:

A. as an exothermic process because it releases heat