Phase Changes - Phase Diagrams

Front

What are the three main states of matter?

Back

Solid, Liquid, Gas.

Front

What is a phase change?

Back

A transition between different states of matter.

Front

Define 'normal boiling point'.

Back

The temperature at which a liquid's vapor pressure equals the external pressure.

Front

What is a phase diagram?

Back

A graphical representation showing the states of matter at different temperatures and pressures.

Front

What does the term 'supercritical fluid' mean?

Back

A state of matter that occurs when a substance is above its critical temperature and pressure.

Front

What happens during condensation?

Back

A gas turns into a liquid.

Front

What is sublimation?

Back

The process where a solid turns directly into a gas without becoming a liquid.

Front

What is deposition?

Back

The process where a gas turns directly into a solid without becoming a liquid.

Front

What is the critical point in a phase diagram?

Back

The temperature and pressure at which a substance can no longer exist as a liquid.

Front

What is the significance of point B in a phase diagram?

Back

It indicates the conditions under which a substance can exist as a supercritical fluid.