Question

read the passage. then, select the text that best helps you understand the meaning of sublimation. a phase transition occurs when a substance is transformed from one state of matter into another due to changes in temperature or pressure. some phase transitions, like melting, freezing, evaporation, and condensation, are commonly observed in everyday life. for example, when water freezes to form ice, it undergoes a phase transition from a liquid state to a solid state; and when it evaporates, it undergoes a phase transition from liquid to gas. other phase transitions, however, are less common. one such change is sublimation, a process exemplified by the behavior of dry ice - frozen carbon dioxide commonly used to keep packaged items cold and dry during shipping. when dry ice is left at room temperature, the solid carbon dioxide changes to carbon dioxide gas without melting into a liquid first. what is the meaning of sublimation as used in the passage? a physical process in which a solid changes directly to a gas a physical process in which a gas changes directly to a solid a physical process in which carbon dioxide becomes dry ice a physical process in which solid carbon dioxide melts

Explanation:

The passage defines sublimation as the process where dry - ice (solid carbon dioxide) changes to carbon dioxide gas without melting into a liquid first. This indicates that sublimation is a physical process in which a solid changes directly to a gas.

Answer:

a physical process in which a solid changes directly to a gas