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Ever used a cold pack on an injury? This quick and easy procedure will demonstrate how to make a cold pack with chemicals. The process in making the cold pack is not a chemical reaction but merely the physical act of dissolving. When ammonium nitrate is dissolved in water, the process is endothermic, thus producing the cold pack.


  • Endothermic Reactions
  • Enthalpy
  • Calorimetry
  • Heat of Solution
  • Dependent & Independent Variables
  • Thermodynamics