electrical energetic exothermic endothermic
I gave my students this multiple choice question: In a laboratory procedure, students added sodium hydroxide crystals to a beaker of water and allowed the resulting solution to cool. Based on this information, which type of chemical process most likely occurred?

Only one answer is correct among these 4 choices:
- electrical
- energetic
- exothermic
- endothermic

Could you tell me which one is correct?

exothermic