Unit 10 Chem- 10.4
Melting
solid to liquid
Freezing
liquid to solid
Boiling (vaporization)
ligiod to gas
Condensation
gas to liquid
Sublimation
solid directly to gas
Desposition
gas directly to solid
Sublimation & Deposition
- dry ice (CO2)
- iodine (I2)
What does the Phase Diagram show
the phase of a pure substance at different temps and pressures
What do the curves on the phase diagram indicate
the conditions of temp and press under which equilibrium between 2 phases both exist
How can gasses be condensed
by decreasing temp or increasing pressure
Critical point
the temp and pressure at which the gas and liquid phases of a substance become identical
Supercritical fluid
a substance held at or above its critical temp and press; has properties of both gas and liquid
Triple point
the temp and press at which all 3 phases are in equalibrium