Chemical reactions can be classified as exothermic or endothermic. After studying these images and descriptions be sure to watch the Energy and Chemical Reactions animation.
| Exothermic reactions release more energy than they absorb. The reactants in exothermic reactions have higher bond energy than the products. When the bonds are broken energy is released. |
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| Endothermic reactions absorb more energy than they release. The reactants have lower bond energy than the products. Energy is absorbed by the reaction. |
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