When a solid is converted directly to a gas, what is the change of state called? Chemistry Phases of Matter Changes of State 1 Answer anor277 Jul 7, 2016 #"Solid to gas "-=" Sublimation."# #"Verb = sublime"# Explanation: #CO_2(s)#, dry ice or card ice, is a common laboratory material that undergoes this transition at conventional pressures. Answer link Related questions How can changes of state be explained by the particle theory? How do changes in state involve exchanges of energy? How do changes of state establish equilibrium? How do changes of state relate to the kinetic theory? How do the laws of conservation apply to changes of state? What changes in state are endothermic? Why are changes of state considered to be physical? Why are sublimation and deposition unusual changes of state? Why do changes of states matter? Which state of matter undergoes changes in volume most easily? See all questions in Changes of State Impact of this question 4489 views around the world You can reuse this answer Creative Commons License