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This lesson covers endothermic reactions — reactions that absorb energy from the surroundings — including examples, temperature changes, everyday uses and energy profile diagrams as required by the Edexcel GCSE Combined Science specification (1SC0).
An endothermic reaction is one that takes in (absorbs) energy from the surroundings, usually as heat. The temperature of the surroundings (and the reaction mixture) decreases.
| Term | Meaning |
|---|---|
| Endothermic | "Endo" = in; "thermic" = heat. Energy is absorbed |
| Temperature change | The temperature of the surroundings falls |
| Energy transfer | From the surroundings to the chemical system |
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