Phase Changes

Front

What is the energy that an object has because it is moving?

Back

Kinetic energy

Front

As heat is added to a substance, does the temperature always increase?

Back

No, it does not increase during the phase change.

Front

What is it called when a solid turns directly into a gas?

Back

Sublimation

Front

What is the change from gas to solid called?

Back

Deposition

Front

When kinetic energy increases, what happens to the temperature and speed of the molecules?

Back

They increase.

Front

What is the process called when a liquid turns into a gas?

Back

Vaporization

Front

What is the process called when a gas turns into a liquid?

Back

Condensation

Front

What is the change from solid to liquid called?

Back

Fusion (or Melting)

Front

What happens to the kinetic energy of molecules during a phase change?

Back

It remains constant during the phase change.

Front

What is the term for the temperature at which a substance changes from solid to liquid?

Back

Melting point