The process when a gas turns into a solid without becoming a liquid is called sublimation. This phenomenon occurs under specific conditions where the transition involves direct conversion from the gaseous state to a solid state, bypassing the liquid phase. A common example of sublimation is dry ice (solid carbon dioxide), which sublimates directly into carbon dioxide gas at room temperature. Sublimation plays a role in various natural processes and has applications in areas such as freeze-drying and certain manufacturing techniques.