Phase Diagrams

Front

What is a phase diagram?

Back

A graphical representation showing the phases of a substance at different temperatures and pressures.

Front

What does the x-axis of a phase diagram typically represent?

Back

Temperature.

Front

What does the y-axis of a phase diagram typically represent?

Back

Pressure.

Front

What is the normal melting point?

Back

The temperature at which a substance changes from solid to liquid at 1 atm pressure.

Front

What is the normal boiling point?

Back

The temperature at which a substance changes from liquid to gas at 1 atm pressure.

Front

What is the triple point?

Back

The unique set of conditions at which all three phases (solid, liquid, gas) coexist in equilibrium.

Front

What is the critical point?

Back

The temperature and pressure at which the gas and liquid states of a substance become indistinguishable.

Front

What phase is represented by the area to the left of the melting line in a phase diagram?

Back

Solid.

Front

What phase is represented by the area to the right of the boiling line in a phase diagram?

Back

Gas.

Front

What phase is represented by the area between the melting and boiling lines in a phase diagram?

Back

Liquid.