When ammonium nitrate is dissolved in water it feels cold, which indicates an endothermic reaction.
NH4NO3 (s) → NH4+ (aq) + NO3- (aq)

• Dissolution / Endothermic Reactions / Energy Transformations / Lesson Plans / Solubility
• 1.3b / 5.4e / 6.2e / 6.5a / BIO.2a / CH.2h / CH.3e / CH.5g / PH.7a / PS.5b / PS.6b