Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

When ammonium nitrate is mixed with water, the temperature of the mixture falls. The ammonium nitrate can be obtained again by removing the water through evaporation. Which statement accounts for these observations?

  • AThe ammonium nitrate dissolves in the water, and the process is endothermic.
  • BThe ammonium nitrate reacts with the water, and the process is endothermic.
  • CThe ammonium nitrate dissolves in the water, and the process is exothermic.
  • DThe ammonium nitrate reacts with the water, and the process is exothermic.

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