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Phase Diagram Explorer
AP Chemistry · Unit 3 Intermolecular Forces
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Learning Objectives
Read phase diagrams: solid/liquid/gas regions
Identify triple point & critical point
Understand supercritical fluid region
Compare H₂O (negative slope) vs CO₂ (positive slope)
Key Points
Triple Point: all 3 phases coexist
Critical Point: liquid/gas boundary vanishes
H₂O: solid-liquid line slopes LEFT
CO₂: solid-liquid line slopes RIGHT
Tags
phase diagram
triple point
critical point
AP Chemistry
Phase
—
Substance
H₂O
CO₂
Temperature (°C)
25
Pressure (atm)
1
Current Phase
—