1. States of Matter
Solids
Liquids
Gases

2. Intermolecular Forces
Intermolecular forces are attractions that bring particles together.
Not exactly a Bond…
just an attraction.

3. Intermolecular Forces
Three Kinds…
Dispersion Forces
Dipole-Dipole Forces
Hydrogen Bonds

4. Weak forces that come from electrons when they are unbalanced.
Dispersion Forces
Weak forces that come from electrons when they are unbalanced.

5. Attraction between oppositely charged ends of different molecules.
Dipole-Dipole Forces
Attraction between oppositely charged ends of different molecules.

6. (a form of dipole-dipole bond)
Hydrogen Bonds
(a form of dipole-dipole bond)
A hydrogen atom on one molecule being attracted to a lone pair of electrons on another atom.

7. Hydrogen Bonds
LIKE IN WATER!!!!!

8. Liquids and Solids Density and Compression Fluidity Liquid vs. Gas
Diffusion of color through water (rate depends on water temp)

9. Measures the resistance of a liquid to flow.
Viscosity
Measures the resistance of a liquid to flow.
Stronger attraction…
Temp increases…
higher viscosity
viscosity decreases

10. Surface Tension
Energy needed to increase the surface area of a liquid.
Surfactants decrease surface tension (get in the way of bonds)

11. Walkin' on Water!

12. Capillary Action Cohesion Adhesion Attraction between like molecules
Attraction between different materials

13. Structures of Solids Crystalline Solid Unit cell Molecular SolidPg
Crystalline Solid
Unit cell
Molecular Solid
Covalent Network Solids
Ionic Solids
Metallic Solids
Amorphous Solids

14. Phase Changes

15. Phase Diagram
Pg. 409

16. Triple Point
Point on the phase diagram that represents the temperature and pressure at which all three phases of a substance coexist.
Triple Point

17. MELTING
Solid Liquid
Melting Point: temperature at which forces holding a solid together are broken and it becomes a liquid.

18. Vaporization Liquid Gas
Evaporation: vaporization that occurs at the surface of a liquid.

19. Is evaporation a heating or cooling process?

20. Pressure exerted by a vapor over a liquid.
Vapor Pressure
Pressure exerted by a vapor over a liquid.

21. vapor pressure = atmospheric pressure
Boiling Point
Temp at which…
vapor pressure = atmospheric pressure
for a liquid.

22. Condensation is the opposite of _______?________.
Gas Liquid
Condensation is the opposite of _______?________.

23. Temp at which a liquid is converted into a solid.
Freezing Point
Liquid Solid
Temp at which a liquid is converted into a solid.

24. Sublimation
Process where a solid changes DIRECTLY to a gas, without first becoming a liquid!
Sublimation

25. Freeze Dried Foods

26. Deposition
Gas Solid
When a substance changes from a vapor/gas to a solid, without first becoming a liquid.