Question
Exothermic reaction and Endothermic reaction
✓
Answer
| Exothermic reaction | Endothermic reaction | ||
| (i) | The reaction where heat energy is evolved or liberated is called as exothermic reaction. | (i) | The reaction where heat energy is absorbed is called as endothermic reaction. |
| (ii) | Temperature of the reaction mixture rises. | (ii) | Temperature of the reaction mixture lowers. |
| (iii) | Generally, the reactions are fast. | (iii) | Generally, the reactions are slow. |
| (iv) | e.g.: When NaOH dissolves in water | (iv) | e.g.: Calcium is strongly heated. |
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