Phase Change Diagrams

Front

True or false: melting and freezing occur at the same temperature!

Back

True

Front

What is happening to the particles in the substance between points D and E?

Back

Vaporizing

Front

How long does it take this substance to change from a liquid to a gas?

Back

10 minutes

Front

At what temperature is this substance melting?

Back

0C

Front

What is the boiling point of the substance shown in the heating curve?

Back

60 C

Front

Define phase change.

Back

A phase change is the transformation of a substance from one state of matter to another, such as solid to liquid or liquid to gas.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid becomes a gas.

Front

Explain the process of sublimation.

Back

Sublimation is the process where a solid changes directly into a gas without passing through the liquid phase.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change, even though heat is being added or removed.