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.

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.

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.

If the reaction is exothermic, we need to decrease the temperature to favor the products, because the reaction generates heat. Raising temperature for exothermic reactions, or lowering temperature for …

Aug 23, 2025 · Exothermic reactions release energy to their surroundings, while endothermic reactions absorb energy from them. This directly impacts the surrounding temperature: exothermic reactions …

When a chemical reaction happens, energy is transferred to or from the surroundings. When energy is transferred to the surroundings, this is called an exothermic reaction and usually feels hot.

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

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.