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Chemistry
Grade 11: Energy changes
| Term | Definition |
|---|---|
| Heat of reaction (ΔH) | The energy absorbed or released per mole in a chemical reaction. |
| Exothermic reactions | Reactions that release energy. |
| Endothermic reactions | Reactions that absorb energy. |
| Activation energy | The minimum energy needed for a reaction to take place. |
| Activated complex | The unstable transition state from reactants to products. |