What is dry ice made of?

Dry ice is the solid form of <a href="https://www.wikiwhat.page/kavramlar/Carbon%20Dioxide">carbon dioxide</a> (CO₂). It's called "dry ice" because it doesn't melt into a liquid when it warms; instead, it undergoes <a href="https://www.wikiwhat.page/kavramlar/Sublimation">sublimation</a>, transitioning directly from a solid to a gaseous state. Dry ice is produced by compressing gaseous carbon dioxide into a liquid, then allowing it to expand rapidly. This rapid expansion causes a significant temperature drop, which freezes a portion of the liquid carbon dioxide into a solid "snow." This snow is then compressed into blocks, pellets, or other shapes of dry ice.