<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> An exothermic reaction is a chemical reaction that releases energy by light or heat . It is the opposite of an endothermic reaction . </P> <P> Expressed in a chemical equation: reactants → products + energy . Exothermic Reaction means "exo" (derived from the greek word: "έξω", literally translated to "out") meaning releases and "thermic" means heat . So the reaction in which there is release of heat with or without light is called exothermic reaction . </P>

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