Phase Changes Flashcard for 9th Grade Physical Science

Front

Which phase change is the most energy-intensive? Options: Melting ice, Condensing water vapor, Freezing water, Sublimation of dry ice.

Back

Sublimation of dry ice

Front

When matter transitions to a more disordered state, what typically happens to its energy?

Back

Energy is always absorbed

Front

Which phase change involves the direct transformation from solid to gas without becoming a liquid?

Back

Sublimation

Front

In terms of molecular organization, which phase represents the most ordered state of matter?

Back

Solid

Front

What happens to molecular movement during a phase change from liquid to solid?

Back

Molecules slow down and become more organized

Front

Which phase change requires the most energy input?

Back

Vaporization

Front

When water changes from liquid to gas, this process is called:

Back

Melting

Front

The transition of a substance from gas directly to solid is known as:

Back

Deposition

Front

Which statement best describes plasma?

Back

A highly energized state with electrically charged particles

Front

During a phase change, what typically happens to the temperature of a substance?

Back

It changes based on whether energy is being absorbed or released.