Exothermic Reaction Definition

Chemistry Glossary Definition of Exothermic Reaction

Steel wool
The rusting of steel is an example of an exothermic chemical reaction. Pixabay

Exothermic Reaction Definition:

A chemical reaction that produces heat (has a negative ΔH).

See: Examples of Exothermic Reactions

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Helmenstine, Anne Marie, Ph.D. "Exothermic Reaction Definition." ThoughtCo, Feb. 8, 2017, thoughtco.com/definition-of-exothermic-reaction-604462. Helmenstine, Anne Marie, Ph.D. (2017, February 8). Exothermic Reaction Definition. Retrieved from https://www.thoughtco.com/definition-of-exothermic-reaction-604462 Helmenstine, Anne Marie, Ph.D. "Exothermic Reaction Definition." ThoughtCo. https://www.thoughtco.com/definition-of-exothermic-reaction-604462 (accessed April 23, 2018).