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What is a chemical reaction that releases heat to the surroundings called?

Answer and explanation

Correct answer: Exothermic reaction

The governing concept is energy transfer during a chemical reaction. When the reacting system gives heat to the surroundings, the reaction is called exothermic and its enthalpy change is negative under the usual convention. Combustion is a familiar example because it releases noticeable heat. Therefore, option A is correct. An endothermic reaction absorbs heat, while displacement and decomposition describe reaction patterns rather than this heat-flow property.

Related tags

Class 10 ScienceExothermic ReactionHeat EnergyChemical ReactionsChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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