Phase Diagram Analysis
A worksheet to assess understanding of phase diagrams, including triple points, critical points, and phase transitions.
Includes
Standards
Topics
Phase Diagram Analysis
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Date:
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Read each question carefully and answer to the best of your ability. Refer to the provided phase diagram for relevant questions.
Refer to the general phase diagram below for questions in this section.
1. What is represented by the point where all three phase lines meet on a phase diagram?
Critical Point
Boiling Point
Triple Point
Melting Point
2. Above the critical temperature and critical pressure, a substance exists as a .
3. The process of a solid directly changing into a gas without passing through the liquid phase is called .
4. Describe what happens to a substance when it crosses the solid-liquid boundary on a phase diagram from left to right.
5. For most substances, the solid-liquid coexistence curve slopes to the right, indicating that the solid phase is denser than the liquid phase.
True
False
Match each term with its definition.
6. Sublimation
a. Temperature and pressure at which solid, liquid, and gas phases coexist.
7. Critical Point
b. Direct transition from solid to gas.
8. Triple Point
c. Point beyond which distinct liquid and gas phases no longer exist.
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