Chemistry A-Level
Endothermic
What Endothermic means in Chemistry A-Level, as defined for OCR.
Definition of Endothermic
Check what you remember
Read the wording for your board, then hide it and explain Endothermic in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A reaction in which the system gains enthalpy from the surroundings, so the surroundings cool and ∆H carries a positive sign.
Topics that use Endothermic
- Enthalpy changes (OCR A-Level)
Related terms
- ∆H of combustion
- ∆H of formation
- Activation energy
- Approximate estimate
- Average bond enthalpy
- Averaging over gaseous compounds
- Bond breaking and bond making
- Bond enthalpy
Using Endothermic in the exam
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