Grade 12 Chemistry: Phase Diagrams
Explore the principles of phase diagrams, including triple points, critical points, and the relationships between pressure, temperature, and states of matter for various substances.
Includes
Standards
Topics
Grade 12 Chemistry: Phase Diagrams
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Refer to your knowledge of phase diagrams.
1. What is the definition of the triple point on a phase diagram?
The point at which a substance transitions directly from solid to gas.
The point where solid, liquid, and gas phases coexist in equilibrium.
The highest temperature and pressure at which a substance can exist as a liquid.
The boiling point of a substance at standard atmospheric pressure.
2. Above the critical point, what state of matter does a substance exist in?
Solid
Liquid
Gas
Supercritical fluid
3. The line separating the solid and liquid phases on a phase diagram is called the curve.
4. Sublimation occurs when a substance transitions directly from the solid phase to the phase.
5. Describe the key difference between the phase diagram of water and most other substances.
6. At pressures below the triple point, a liquid phase can exist for a substance.
True
False