Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

Which row gives a description of an endothermic reaction?

  • Aenergy needed to break bonds $= 400\,\text{kJ}$, energy released by forming bonds $= 200\,\text{kJ}$, temperature decreases
  • Benergy needed to break bonds $= 400\,\text{kJ}$, energy released by forming bonds $= 800\,\text{kJ}$, temperature decreases
  • Cenergy needed to break bonds $= 600\,\text{kJ}$, energy released by forming bonds $= 200\,\text{kJ}$, temperature increases
  • Denergy needed to break bonds $= 600\,\text{kJ}$, energy released by forming bonds $= 800\,\text{kJ}$, temperature increases

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