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 is the triple point?

Back

The specific temperature and pressure at which a substance can exist in all three phases: solid, liquid, and gas simultaneously.

Front

What is the critical point?

Back

The temperature and pressure at which the distinction between liquid and gas phases disappears.

Front

What happens to CO2 above 31°C?

Back

It cannot be condensed back into a liquid.

Front

What is the normal boiling point of water?

Back

100°C at 1 atmosphere of pressure.

Front

What does the area under the curve in a phase diagram represent?

Back

The different phases of a substance (solid, liquid, gas) at various temperatures and pressures.

Front

What is the melting point?

Back

The temperature at which a solid becomes a liquid.

Front

What is the boiling point?

Back

The temperature at which a liquid becomes a gas.

Front

In a phase diagram, what does the line between solid and liquid represent?

Back

The melting/freezing point of the substance.

Front

In a phase diagram, what does the line between liquid and gas represent?

Back

The boiling/condensation point of the substance.