Question

what is exothermic change​

Answer 1

Answer:

Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Chemical reactions that absorb (or use) energy are called endothermic.

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 of water

Explanation:

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Answer 2

• Exothermic reactions are chemical processes that produce energy.
• When bonds are generated in products, more energy is released than is consumed to break bonds in reactants in exothermic processes.
• Endothermic reactions are chemical processes that absorb (or utilize) energy.
• A reaction that releases heat and has a net negative standard enthalpy change is referred to as an exothermic reaction.
• Any combustion process, iron rusting, and water freezing are all examples of this.