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Question
Can water boil at room temperature?
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How do We Interpret Phase Diagrams?
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Let’s recall
Gas phaseLiquid phaseSolid phase
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What is a Phase Diagram?
A phase diagram shows the preferred physical states of matter at different temperatures and pressure.
There exists for each gas a temperature above which the gas cannot be liquefied. This temperature, above which the gas cannot be liquefied, is called the critical temperature
Triple point is the intersection on a phase diagram where three phases coexist in equilibrium
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Trying to Interpret a Phase Diagram
What is happening along curve AB? What is happening along curve BC? What is happening along curve BD?
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Phase Change Terms
We must know the names of the phase changes.
Which ones do we know already?
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How do we identify the phases?
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Let’s interpret the diagrams?