What do we call reactions that result in the release of energy in the form of heat?

Reactions that result in the release of energy in the form of heat are classified as exothermic reactions. During these processes, the chemical bonds in the reactants break, and new bonds in the products form. As the products are formed, the energy stored in these bonds is released, contributing to an increase in the temperature of the surrounding environment. This release of heat is a defining characteristic of exothermic reactions, making them essential in numerous applications, including combustion and many biological processes.

In contrast, endothermic reactions absorb heat from their surroundings, often resulting in a temperature drop in the environment, while isothermal processes occur at a constant temperature with no net change in thermal energy. Equilibrium refers to a state in which the reactants and products of a reaction are present in stable concentrations, with no net change occurring. Understanding the distinction between these terms is crucial for comprehending thermal dynamics in chemical reactions and their implications in fire safety and prevention.