Quiz: Phase Diagrams

1. A phase diagram shows the relationship between
a. pressure, volume, and the three phases of matter
b. temperature, pressure, and the three phases of matter
c. temperature, volume, and the three phases of matter
2. A single homogeneous physical state is referred to as
a. pressure
b. temperature
c. a phase
3. The phase change that results from a solid going directly into the gaseous phase is
a. sublimation
b. melting
c. vaporizing
4. On a phase diagram, the intersection of the solid, liquid, and gaseous lines is known as the
a. intersection point
b. fluid point
c. triple point
5. On a phase diagram, the temperature and pressure at which the phase boundary between the liquid and gas ceases to exist is called the
a. critical point
b. boiling point
c. triple point
6. Beyond the critical point, the phase of the substance is referred to as a
a. super solid
b. supercritical fluid
c. super gas
7. Above the critical temperature, it is impossible to
a. apply enough pressure to condense the gas to a liquid
b. measure the temperature of a substance
c. apply enough pressure to freeze a liquid
8. The lines on a phase diagram represent the temperatures and pressures at which
a. one phase of the substance is present
b. two phases of the substance are present
c. all three phases of the substance are present
9. On a phase diagram, temperature and pressure can either be varied or held constant. These factors are referred to as
a. dependent variables
b. independent variables
c. constants

Questions 10 and 11 refer to the following diagram:

Thumbnail image of

10. At 1.0 atmosphere of pressure and 150°C, what is the phase of water?
a. gas
b. liquid
c. solid
11. What phases of water are present at a temperature of 0.01°C and 0.006 atm of pressure?
a. solid and liquid
b. solid and gas
c. solid, liquid, and gas

Cite this article

Ask Cliff

More Study Help