What is a chemical reaction that gives off energy?

1 Answer
Apr 20, 2018

Answer:

The thermite reaction.

#Fe_2O_3+2Alrarr2Fe+Al_2O_3#

Explanation:

The thermite reaction, the reaction of iron oxide with aluminum

#Fe_2O_3+2Alrarr2Fe+Al_2O_3#

gives off a lot of energy. Reactions that liberate heat are called exothermic

Take a look here .

A lot of energy is released because aluminum's affinity for oxygen is much stronger than iron's affinity for oxygen.