Here's a breakdown:
* Sublimation: The transition of a substance directly from the solid to the gaseous state without passing through the liquid state.
Examples of sublimation:
* Dry ice (solid carbon dioxide): Dry ice sublimates at room temperature, turning directly into carbon dioxide gas.
* Naphthalene (mothballs): Naphthalene slowly sublimates over time, releasing a gas that repels moths.
* Frozen water (ice): Under certain conditions, ice can sublimate directly into water vapor.
Key point: Sublimation is a phase change that occurs when the solid's vapor pressure is higher than the surrounding atmospheric pressure.
