Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change...
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Transcript of Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change...
![Page 1: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/1.jpg)
Phase Changes
• A change from one state of matter (solid, liquid, gas) to another.
• Physical change because appearance is changed, not chemical make-up; reversible.
• Heat energy is either absorbed (molecules speed up) or released (molecules slow down)
• Ex. Melting: Ice to water; heat absorbed
![Page 2: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/2.jpg)
Types of Phase Changes
![Page 3: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/3.jpg)
Melting
• Phase change from a solid to a liquid
• Molecules speed up, move farther apart, and absorb heat energy
![Page 4: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/4.jpg)
Freezing
• Phase Change from a liquid to a solid
• Molecule slow down, move closer together and release heat energy.
![Page 5: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/5.jpg)
Evaporation
• Phase change from a liquid to a gas (occurs at the boiling point)
• Molecules speed up, move farther apart, and absorb heat energy.
![Page 6: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/6.jpg)
Condensation
• Phase change from a gas to a liquid.
• Molecules slow down, move closer together and release heat energy.
![Page 7: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/7.jpg)
Sublimation
• Phase change from a solid to a gas.
• Molecules speed up, move farther apart, and absorb heat energy.
![Page 8: Phase Changes A change from one state of matter (solid, liquid, gas) to another. Physical change because appearance is changed, not chemical make-up; reversible.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ccc5503460f94996022/html5/thumbnails/8.jpg)
Deposition
• Phase change from a gas to a solid.
• Molecules slow down, move closer together and release heat energy.
• Vapor in air turns directly into frost on a windshield