Question

which three phase changes are exothermic? a. freezing, condensation, deposition b. vaporization, boiling, evaporation c. condensation, vaporization, melting d. fusion, sublimation, vaporization

Explanation:

Exothermic phase - changes release heat. Freezing (liquid to solid), condensation (gas to liquid), and deposition (gas to solid) are exothermic. Vaporization (liquid to gas), boiling (a type of vaporization), evaporation (surface - level vaporization), melting (solid to liquid), fusion (same as melting), and sublimation (solid to gas) are endothermic (absorb heat).

Answer:

A. freezing, condensation, deposition