What are exothermic reactions? Give one example..
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the reactions which give out heat are called exothermic reactions.Eg: when copper sulphate solution reacts with iron fillings.
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An exothermic reaction is a chemical reaction that releases energy either in the form of heat or light or heat+light.
methane + oxygen ==> carbon dioxide + water (+ heat energy)
CH4 + 2O2 ==> CO2 + 2H2O + HEAT
methane + oxygen ==> carbon dioxide + water (+ heat energy)
CH4 + 2O2 ==> CO2 + 2H2O + HEAT
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