What is a chemical reaction in which heat is released as a product called?

1 Answer
Jul 7, 2016

Answer:

This is called #"an exothermic reaction"#

Explanation:

Any reaction in which energy can be treated as a product is termed #"exothermic:"#

#CH_4(g) + 2O_2 rarr CO_2(g) + 2H_2O(l) + Delta#

On the other hand, where energy appears as a reactant, the reaction is termed #"endothermic":#

#NaCl(s) + Delta rarr Na^(+)(aq) + Cl^(-)(aq)#