Endothermic Reaction vs Exothermic Reaction — Difference (with Table)
Endothermic Reaction vs Exothermic Reaction compared side by side — a 7-row comparison table and 4 key points. Class 9-12 Chemistry, free and no sign-up.
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TL;DR: Endothermic Reaction vs Exothermic Reaction compared side by side — a 7-row comparison table and 4 key points. Class 9-12 Chemistry, free and no sign-…
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The main difference between Endothermic Reaction and Exothermic Reaction: Endothermic reactions absorb heat from surroundings and feel cold, while exothermic reactions release heat and feel hot. These chemical processes are funda
Endothermic Reaction vs Exothermic Reaction — Comparison Table
| Basis | Endothermic Reaction | Exothermic Reaction |
|---|---|---|
| Heat flow | Absorbs heat from surroundings | Releases heat to surroundings |
| Temperature change | Surroundings get colder | Surroundings get hotter |
| Energy diagram | Products have higher energy than reactants | Products have lower energy than reactants |
| ΔH value | ΔH is positive (+) | ΔH is negative (-) |
| Examples | Melting ice, evaporation, photosynthesis | Burning fuel, combustion, respiration |
| Activation energy | Needs continuous heat input | May need initial ignition, then sustains |
| Spontaneity | Generally non-spontaneous | Generally spontaneous |
Key Points
- Endothermic reactions feel cold; exothermic reactions feel hot
- Endothermic reactions have positive ΔH; exothermic reactions have negative ΔH
- Photosynthesis is endothermic; cellular respiration is exothermic (opposite process)
- All reactions follow energy conservation law