Exothermic and endothermic reactions
What Exothermic and endothermic reactions means in Chemistry GCSE, as defined for AQA.
Definitions of Exothermic and endothermic reactions
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Reference: AQA
Reactions identified from reaction profiles by comparing the two levels: lower products mean energy is released, so the reaction is exothermic; higher products mean energy is absorbed, so it is endothermic.
Exothermic reactions transfer energy to the surroundings, causing a temperature rise, while endothermic reactions absorb energy from the surroundings, causing a temperature fall.
Topics that use Exothermic and endothermic reactions
- Energy transfer during exothermic and endothermic reactions (AQA GCSE)
- Reaction profiles (AQA GCSE)
Related terms
- Reaction profile
- Activation energy
- Bond breaking and bond making
- Catalyst
- Collision theory
- Collisions
- Conservation of energy
- Energy level diagrams
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