A concept map with nine ovals. The words ‘Phase changes’ are written in the main oval at the center. Other ovals contain the words Deposition, Exothermic, Melting, and Sublimation. The remaining ovals a, b, c, and d are blank. The Phase changes oval is connected to other blank ovals to find:

• What happens during exothermic phase changes?
• What are the different types of phase changes