States of Matter and Phase Changes

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

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

Back

Melting.

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 process called when a liquid turns into a solid?

Back

Freezing.

Front

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

Back

The temperature remains constant during a phase change.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter; it is the total kinetic energy of particles in a substance.

Front

What does a phase change graph represent?

Back

A phase change graph represents the relationship between temperature and time during a phase change.

Front

What do the diagonal lines on a phase change graph indicate?

Back

The diagonal lines represent the states of matter (solid, liquid, gas) as temperature changes.

Front

What is the term for the energy required to change a substance from solid to liquid?

Back

Heat of fusion.