What are the 6 phase changes along a heating curve?
Freezing - liquid to solid
Melting - solid to liquid
Deposition - gas to solid
Sublimation - solid to gas
Condensation - gas to liquid
Boiling - liquid to gas
Usually you do not see all 6 phase change. For example, consider the heating curve of water at 1 atm.
When heat is added, you would observe the melting and boiling process.
When heat is removed, you would observe the condensation and freezing process.
Sublimation and deposition do not occur for water at 1 bar.
Refer to the phase diagram for water below.