1. Water Phase Diagram
Effects of increasing the pressure (revisit ice skating example)

2. Phase vs. State of Matter
States of Matter:
Solid, liquid, gas, or plasma
Phases of Matter:
Two or more different forms of a substance that are in the same state

3. Both solid phases of Carbon Graphite Diamond
Graphite vs Diamond
Both solid phases of Carbon Graphite Diamond

4. Graphite Diamond Opaque Soft Electrical Conductor Thermal Insulator
Relate structure to softness/hardness and how that helps its uses (graphite – pencils and diamonds being used as high power tools). Even though both are a form of carbon they have extremely different structure and function.
Opaque
Soft
Electrical Conductor
Thermal Insulator
Transparent
Hard
Electrical Insulator
Thermal Conductor

5. Are diamonds more than just jewelry?
Play Video

6. How is diamond formed naturally?
Have students copy these questions onto piece of paper to answer during video.
List at least 3 properties of diamonds mentioned in the video.
How are diamonds formed naturally?
Why is methane used in Chemical Vapor Deposition?
What two physical conditions are required to form man-made diamonds?
Can you tell the difference between natural and man-made diamonds?
Why might diamonds replace silicon in electronic devices?

7. Carbon Phase Diagram

8. What are some properties of diamond?

9. Why use Methane in Chemical Vapor Deposition (CVD)?
Under what conditions? Why? (relate to breaking bonds in methane and the conditions diamonds form at/phase diagram)

10. Carbon Phase Diagram

11. Why might diamonds replace silicon in electronic devices?