Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

Which experiment releases the most energy as heat?

  • Ainitial temperature $20^\circ\text{C}$; final temperature $5^\circ\text{C}$
  • Binitial temperature $20^\circ\text{C}$; final temperature $32^\circ\text{C}$
  • Cinitial temperature $25^\circ\text{C}$; final temperature $12^\circ\text{C}$
  • Dinitial temperature $25^\circ\text{C}$; final temperature $34^\circ\text{C}$

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