What is the Name of the Process Due to Which Dry Ice Changes into Carbon Dioxide?

The process is called sublimation. Dry ice is the solid form of carbon dioxide (CO₂). Unlike water ice, it does not melt into liquid when warmed. Instead, it directly turns into carbon dioxide gas. This direct change from solid to gas without becoming liquid is called sublimation.

Examples of Sublimation

• Camphor disappearing when heated.
• Naphthalene balls reducing in size over time.
• Ammonium chloride heated in labs.

Uses of Dry Ice

• Preserving food during transport.
• Creating fog effect in theaters.
• Used in refrigeration when liquid ice is not suitable.