Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

Ammonium chloride is put into $100\,\text{cm}^3$ of water. The temperature falls from $25^\circ\text{C}$ to $20^\circ\text{C}$. What type of reaction takes place?

Aendothermic
Bexothermic
Cfreezing
Dneutralisation

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