Chemistry 5070 · O Level · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

When chemical reaction X occurs, thermal energy is released. Which row shows the correct information for this reaction?

  • Aendothermic; More energy is required to break the bonds than the energy released when the bonds are formed.
  • Bendothermic; Less energy is required to break the bonds than the energy released when the bonds are formed.
  • Cexothermic; More energy is required to break the bonds than the energy released when the bonds are formed.
  • Dexothermic; Less energy is required to break the bonds than the energy released when the bonds are formed.

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