what are exothermic and endothermic changes give one example
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endothermic -: is photosynthesis
Combustion is an example of an exothermic reaction
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A chemical change in which heat is given out is called known as exothermic reaction. Ex.. Carbon burns in oxygen to form carbon dioxide and heat energy is produced. C+02= C02 +Heat.
A chemical change in which heat energy is absorbed is known as endothermic reaction
Examples=When nitrogen and oxygen are heated together to a particular temperature of about 3000oC, nitric oxide gas is formed . N2+O2+Heat=2N0
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