Uploaded August 2025 | Updated September 2026, 2 weeks ago
Phase Change Relation to Heating and Cooling Curves
Dr. DeBacco
Using Water Example
Easiest to understand since it is easily recognizable, but this concept applies to more than just water.
What causes water to go from one phase to another?
Energy Results in a Phase Change
Adding Energy (Endothermic Change)- Molecules will move further away
Melting
Boiling
Sublimation
Removing Energy (Exothermic Change)- Molecules move closer together
Freezing
Condensation
Deposition
Phase Changes
Heat Added
Solid to Liquid: Melting (Fusion)
Liquid to Gas: Vaporization
Solid to Gas: Sublimation
Heating and Cooling Curves Water
Phase Changes Can be Impacted by Pressure
The water triple point is a specific temperature and pressure where solid ice, liquid water, and gaseous water vapor can coexist in a stable equilibrium.
Link to Lecture Slides: drive.google.com/file/d/1T3gRsRFQXw2DDiIhXBPV61r0pwfOLzkT/view?usp=drive_link
*Due to the description character limit the full work cited for "Phase Change Relation to Heating and Cooling Curves" can be viewed at... docs.google.com/document/d/1njNRg2gBl4gXhTJtutq2RNJutac-L6oS/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
Phase Change Relation to Heating and Cooling Curves
Dr. DeBacco
Using Water Example
Easiest to understand since it is easily recognizable, but this concept applies to more than just water.
What causes water to go from one phase to another?
Energy Results in a Phase Change
Adding Energy (Endothermic Change)- Molecules will move further away
Melting
Boiling
Sublimation
Removing Energy (Exothermic Change)- Molecules move closer together
Freezing
Condensation
Deposition
Phase Changes
Heat Added
Solid to Liquid: Melting (Fusion)
Liquid to Gas: Vaporization
Solid to Gas: Sublimation
Heating and Cooling Curves Water
Phase Changes Can be Impacted by Pressure
The water triple point is a specific temperature and pressure where solid ice, liquid water, and gaseous water vapor can coexist in a stable equilibrium.
Link to Lecture Slides: drive.google.com/file/d/1T3gRsRFQXw2DDiIhXBPV61r0pwfOLzkT/view?usp=drive_link
*Due to the description character limit the full work cited for "Phase Change Relation to Heating and Cooling Curves" can be viewed at... docs.google.com/document/d/1njNRg2gBl4gXhTJtutq2RNJutac-L6oS/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
