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Phases of matter & phase changes
- 2. What would the world be like if ice had a density >1.0g/mL
- 6. PHASE any physically separate part of a material
- 7. MATERIAL any specific kind of matter
- 8. 4 Phases of Matter Solid Liquid Gas Plasma
- 9. SOLIDS • Atoms and/or molecules are tightly packed and strongly bonded • Have definite shape • Have high density • Expand slightly when heated • Almost incompressible
- 10. LIQUIDS • Atoms and/or molecules are tightly packed BUT bonds are stretched or broken • Have definite volume, but take the shape of their container • Has ability to flow • Expand slightly when heated • Almost incompressible
- 11. GASES • Atoms and/or molecules are NOT bonded • Has NO definite shape • Expand without limit to fill any space • Low density • Very compressible
- 12. PLASMA • Electrically charged gasses • Present in the lightning, the sun, etc…
- 13. Phase Changes
- 14. Phase Change the change of a phase to another phase (self explanatory)
- 16. Boiling/Condensation Heat of Vaporization (boiling) •A Liquid to Gas Condensation •A Gas to a Liquid
- 18. Melting/Freezing • Heat of Fusion (melting) –A Solid to a Liquid • Freezing –A Liquid to a Solid
- 19. Sublimation •Sublimation –A Solid to a Gas OR –A Gas to a Solid DRY ICE! Solid CO2 CO2 Gas
- 20. THERMAL EXPANSION Almost all matter expands when heated and contracts when cooled
- 21. Kinetic Theory of Matter All atoms are in constant motion
- 22. HEAT OF FUSION the amount of energy needed to change a material from a solid to a liquid
- 23. HEAT OF VAPORIZATION the amount of energy needed to change a material from a liquid to a gas
- 24. Phase Change Lab What happens to the temperature of water as it changes form a solid to a liquid to a gas?
- 25. Heat of Fusion
- 28. Difference Between Diamonds and Graphite
- 29. Graphite
- 30. Diamond