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Enthalpy Changes · AS Level Chemistry · Energetics

Enthalpy Changes & Hess's Cycles

Aseel's original handwritten AS Level energetics notes — exothermic and endothermic reactions, standard enthalpy definitions, bond energy and calorimetry calculations, and Hess's law cycles with worked examples.

5 PagesHandwritten

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What's covered

  • Exothermic & Endothermic Reactions
  • Energy Profiles & Activation Energy
  • Standard Enthalpy of Formation
  • Standard Enthalpy of Combustion
  • Enthalpy of Neutralisation & Atomisation
  • Bond Energy Calculations
  • Calorimetry (q = mcΔT)
  • Hess's Law Cycles

Details

Chapter
Enthalpy Changes
Topic
Energetics
Level
AS Level Chemistry
Pages
5 Pages
Published
14 Nov 2026