States of Matter and Phase Changes

Front

What is the process called when a gas changes directly to a solid?

Back

Deposition

Front

How do particles in a liquid behave?

Back

Particles of a liquid are free to move around one another but still touch.

Front

What happens to a balloon or marshmallow in a vacuum pump when external forces are removed?

Back

They expand.

Front

What occurs to the volume of a substance when its temperature is decreased?

Back

It shrinks.

Front

Which state of matter has the most inter-molecular bonds?

Back

Solid.

Front

What is the process called when a solid changes to a liquid?

Back

Melting.

Front

What is the process called when a liquid changes to a gas?

Back

Vaporization.

Front

What is the term for the temperature at which a solid becomes a liquid?

Back

Melting point.

Front

What is the term for the temperature at which a liquid becomes a gas?

Back

Boiling point.

Front

What happens to the particles in a solid when it is heated?

Back

They vibrate more and may eventually break free, leading to melting.