Phase Diagrams

Front

What is a phase diagram?

Back

A graphical representation showing the states of matter (solid, liquid, gas) of a substance at different temperatures and pressures.

Front

What does the term 'normal boiling point' mean?

Back

The temperature at which a substance transitions from a liquid to a gas at 1 atmosphere of pressure.

Front

What is the normal boiling point of carbon dioxide (CO2)?

Back

Carbon dioxide does not have a normal boiling point because it sublimates directly from solid to gas.

Front

What is the normal melting point of carbon dioxide (CO2)?

Back

Carbon dioxide does not have a normal melting point because it sublimates directly from solid to gas.

Front

What state of matter is represented by point Z in a phase diagram?

Back

Gas.

Front

What state of matter is represented by point X in a phase diagram?

Back

Solid.

Front

What state of matter is represented by point Y in a phase diagram?

Back

Liquid.

Front

What is a supercritical fluid?

Back

A state of matter that occurs when a substance is above its critical temperature and pressure, exhibiting properties of both liquid and gas.

Front

What is the critical point in a phase diagram?

Back

The point at which the liquid and gas phases of a substance become indistinguishable.

Front

What happens to a substance at its melting point?

Back

It transitions from a solid to a liquid.