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 · That’s an exothermic reaction at work! The combustion of wood or wax involves breaking chemical bonds in the fuel and combining it with oxygen, producing carbon dioxide, water vapor, …

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 …

Aug 24, 2025 · Beyond heat, exothermic reactions can also release energy in other forms, such as light. Combustion reactions, for example, often produce a visible flame, which is a clear sign of light …

An exothermic reaction refers to a chemical process in which energy, usually as heat, is released into the surroundings. This means the products of the reaction have less energy than the reactants.