* Energy Input: The solid must absorb enough energy to overcome the strong attractive forces holding its particles together in a fixed, rigid structure.
* Increased Molecular Motion: This absorbed energy causes the molecules to vibrate more rapidly.
* Phase Transition: As the molecules vibrate faster and faster, they eventually gain enough energy to break free from their solid structure entirely. They move around randomly and independently, becoming a gas.
Examples of Sublimation:
* Dry Ice: Solid carbon dioxide (dry ice) sublimates directly into carbon dioxide gas at room temperature.
* Mothballs: Naphthalene, found in mothballs, also sublimates.
* Freeze-dried Foods: Food is frozen and then placed in a vacuum chamber, allowing the ice to sublimate, leaving behind a dehydrated product.
Let me know if you'd like to know more about sublimation or other phase changes!
