Phase Change #3

Front

What happens to molecules when kinetic energy decreases?

Back

The molecules move slower and get closer together.

Front

What is the relationship between temperature and molecular movement?

Back

As temperature decreases, molecular movement slows down.

Front

Can a phase change be observed at both the molecular and macro scale?

Back

No, a phase change can be explained at the molecular scale but not always observed at the macro scale.

Front

Do molecules always move, regardless of their phase?

Back

Yes, molecules are always in motion whether they are in a solid, liquid, or gas phase.

Front

What occurs when energy is transferred into a substance?

Back

The molecules of the substance will move faster.

Front

What happens to the distance between molecules when temperature drops?

Back

The distance between molecules decreases as they get closer together.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion that molecules possess.

Front

How does temperature affect kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the molecules in a substance.

Front

What is a phase change?

Back

A phase change is the transition of a substance from one state of matter to another, such as solid to liquid.

Front

What happens to molecular movement during melting?

Back

During melting, molecules gain energy and move faster, breaking free from their fixed positions.