Amplify Phase Change Review

Front

What happens to the molecules of a substance when it loses kinetic energy?

Back

The molecules move closer together and may change phase, depending on the strength of the attractions between them.

Front

What is the difference between a solid and a liquid in terms of molecular movement?

Back

In a solid, molecules vibrate in place; in a liquid, molecules can move around each other.

Front

What is a phase change?

Back

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

Front

What does it mean for a substance to have a stronger attraction between its molecules?

Back

It means that the molecules are held together more tightly, making it harder for them to move apart.

Front

How do temperature changes affect the phase of a substance?

Back

Increasing temperature generally adds energy to the molecules, causing them to move faster and potentially change phase.

Front

What is kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion.

Front

What happens to the molecules of a liquid when it is heated?

Back

The molecules gain kinetic energy, move faster, and may eventually change to a gas.

Front

What is the characteristic of a liquid in terms of shape and volume?

Back

A liquid has a definite volume but takes the shape of its container.

Front

What occurs during melting?

Back

During melting, a solid absorbs heat and its molecules gain enough energy to move apart, becoming a liquid.

Front

What is the process of freezing?

Back

Freezing is the process where a liquid loses heat and its molecules slow down, becoming a solid.