Dry ice, which is solid carbon dioxide (CO₂), undergoes a process called sublimation to turn into gas. Here's how it works:

* Sublimation: This is the process where a substance transitions directly from a solid to a gas phase, skipping the liquid phase entirely.

* Dry ice and pressure: At normal atmospheric pressure, carbon dioxide has a very low melting point (-78.5°C or -109.3°F). This means that dry ice will never melt into liquid water at normal temperatures. Instead, it transitions directly into a gas.

* Energy absorption: Dry ice absorbs heat from its surroundings. This energy input provides the molecules in the solid CO₂ enough energy to break free from their solid structure and become gaseous CO₂.

In simple terms:

Imagine dry ice as a group of people holding hands tightly (solid state). When you provide them with enough energy (heat), they start moving around more and eventually break free from each other's grasp (gas state), skipping the step where they dance together closely (liquid state).

Here are some key points about dry ice sublimation:

* No liquid: You won't see any liquid water forming when dry ice sublimates.

* Rapid process: Dry ice sublimates quickly, especially in warmer temperatures.

* Fog effect: As dry ice sublimates, it releases cold CO₂ gas. This cold gas can condense water vapor in the air, creating a fog-like effect.

Let me know if you have any more questions!