In an exothermic reaction, the activation energy (energy needed to start the reaction) is less than the energy that is subsequently released, so there is a net release of energy.

A chemical reaction is exothermic if heat is released by the system into the surroundings. Because the surroundings is gaining heat from the system, the temperature of the surroundings increases.

Mar 9, 2016 · An exothermic reaction is defined as a reaction that releases heat and has a net negative standard enthalpy change. Examples include any combustion process, rusting of iron, and freezing …

May 8, 2025 · Exothermic reaction: Releases heat (feels hot). These energy exchanges are part of a broader field known as thermochemistry, which studies the heat involved in chemical and physical …

Jul 30, 2024 · Endothermic and exothermic reactions are chemical reactions that absorb and release heat, respectively. Photosynthesis is a good example of an endothermic reaction.

Mar 28, 2025 · It all comes down to chemistry – specifically, exothermic and endothermic reactions. These two types of reactions dictate whether heat is released or absorbed.

The meaning of EXOTHERMIC is characterized by or formed with evolution of heat. How to use exothermic in a sentence.

The breaking of bonds is an endothermic process requiring energy, while the making of bonds is an exothermic process with energy being released. The reaction on the surface is exothermic, so the …

4 days ago · exothermic (comparative more exothermic, superlative most exothermic) (chemistry, of a reaction) That releases energy in the form of heat. quotations

Dec 1, 2025 · An exothermic reaction is a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products.