Lesson on Phase Diagrams

Phase Diagrams

•Show the equilibria pressure- temperature relationship among the different phases of a given substance

Multiple Choice

What is the normal freezing point of this substance?

• 100 C

• 400 C

• 0 C

• 500 C

Multiple Choice

What is the normal boiling point of this substance?

• 100 C

• 325 C

• 400 C

Fill in the Blanks

Multiple Choice

What is the phase (s,l,g) of a substance at 2.0 atm and 100 C?

• Solid

• Liquid

• Gas

Multiple Choice

What is the phase (s,l,g) of a substance at 0.75 and 100C?

• Solid

• Liquid

• Gas

Multiple Choice

What is the phase (s,l,g) of a substance at 0.5 atm and 100 C?

• Solid

• Liquid

• Gas

Multiple Choice

What is the phase (s,l,g) of a substance at 1.5 atm and 50 C?

• Solid

• Liquid

• Gas

Multiple Choice

What is the phase (s,l,g) of a substance at 1.5 atm and 800 C?

• Solid

• Liquid

• Gas

Fill in the Blanks

Multiple Choice

If a quantity of this substance was at an inital pressure of 1.25 atm and a temperature of 300 C and was lowered to a pressure of 0.25 atm, What phase transition(s) would occur?

• freezing

• melting

• evaporation

• condensation

• sublimation

Multiple Choice

If a quantity of this substance was at an intial pressure of 1.25 atm and a temperature of 0 C was lowered to a pressure of 0.25 atm, what phase transition(s) would occur?

• Melting

• Freezing

• sublimation

• deposition

Fill in the Blanks

Multiple Choice

If this substance was a t a pressure of 2.0 atm, at what temperature would it boil?

• 800 C

• Would not boil

Fill in the Blanks

Fill in the Blanks

Heating Curve

Multiple Choice

Which line segment represents the solid state?

• A-B

• C-D

• B-C

• D-E

Multiple Choice

Melting and Freezing happen at the same temperature

• True

• False

Multiple Choice

What is the boiling point of this substance?

• 100 C

• 80 C

• 60 C

• 20 C