R15.18

Resource Description

  • Internal energy of compounds
  • Bond energy concept
  • Activation energy and what it means
  • Endothermic & exothermic reactions
  • Activation energy, energy liberated and heat of reaction – either + or –
  • Graphs for endothermic & exothermic reactions
  • Graphs for energy vs distance between atoms during the formation of molecules
  • Breaking and making chemical bonds
  • Bond energy & bond strength
  • Calculations to find energy change during the formation of new molecules
  • Factors affecting bond strength.

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