Chemistry

Question Analysis
This question involves classifying solution formation processes based on energy changes. The main focus is on linking heat release to the correct thermodynamic term.

Key Concept Explanation
Solution formation involves energy changes from breaking and forming intermolecular forces.
An exothermic process releases heat to the surroundings—this happens when the energy released from forming solute-solvent interactions is greater than the energy required to break solute-solute and solvent-solvent interactions.
For example, dissolving sodium hydroxide in water feels warm because the process is exothermic.

Step-by-Step Solution
1. Recall the thermodynamic terms for energy changes: exothermic (releases heat) and endothermic (ab...