Final Answer:
The 7 types of phase changes are:
1. Melting: Example - Ice melting into water.
2. Freezing: Example - Water freezing into ice.
3. Vaporization (Boiling): Example - Water boiling into steam.
4. Condensation: Example - Steam condensing into water droplets.
5. Sublimation: Example - Dry ice (solid carbon dioxide) sublimating directly into carbon dioxide gas.
6. Deposition: Example - Water vapor in the air depositing as frost on a cold surface.
7. Ionization: Example - Solid iodine crystals sublimating into iodine gas and simultaneously ionizing into iodine ions.
Step-by-step explanation:
1. Melting: The process where a substance changes from a solid to a liquid state. Example: Ice melting into water when heated.
2. Freezing: The process where a substance changes from a liquid to a solid state. Example: Water freezing into ice when cooled.
3. Vaporization (Boiling): The process where a substance changes from a liquid to a gas state, typically at its boiling point. Example: Water boiling into steam when heated.
4. Condensation: The process where a substance changes from a gas to a liquid state. Example: Steam condensing into water droplets on a cold surface.
5. Sublimation: The process where a substance changes directly from a solid to a gas without passing through the liquid state. Example: Dry ice (solid carbon dioxide) sublimating into carbon dioxide gas.
6. Deposition: The reverse of sublimation, where a substance changes directly from a gas to a solid. Example: Water vapor in the air depositing as frost on a cold surface.
7. Ionization: The process where atoms or molecules gain or lose electrons, becoming charged ions. Example: Solid iodine crystals sublimating into iodine gas and simultaneously ionizing into iodine ions.
These phase changes are fundamental in understanding the behavior of matter under different conditions.