The term for the change of a solid to a gas without becoming liquid is called sublimation. This process occurs when molecules in a solid gain enough energy to directly transition into the gaseous state while bypassing the liquid phase. Sublimation is commonly observed in substances such as dry ice (solid carbon dioxide) and sublimation can occur under specific conditions of temperature and pressure. It plays a significant role in various natural phenomena, such as snow and ice disappearing without melting. Sublimation is also utilized in various applications, including freeze-drying in food preservation and certain manufacturing processes.