A reaction that releases heat is
A. exothermic
B. Endothermic
C Isothermic

Option A) exothermic

A reaction that releases heat is exothermic

Explanation:

An exothermic reaction is a chemical reaction that occurs spontaneously and brings about the release of energy as reactants particles mix to form products.

An example of a reaction that releases heat is cellular respiration where 1 mole of glucose is oxidized to produce energy. Thus, cellular respiration is an exothermic reaction.

pie chart because it is in percents ( % )

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.