Phase Change

Front

What happens to the molecules of a substance when energy is added and it undergoes a phase change?

Back

The molecules will move faster, and the substance may change from solid to liquid or liquid to gas.

Front

What is the effect of strong molecular attraction on the phase of a substance?

Back

Strong molecular attraction can cause a substance to remain in a solid state, as the molecules move in place.

Front

Describe the movement of water molecules in a liquid state compared to a solid state.

Back

In a liquid state, water molecules move around each other, while in a solid state, they move in place.

Front

What is the relationship between energy and phase change in substances?

Back

Adding energy can cause a substance to change phase, while removing energy can cause it to revert to a previous phase.

Front

How does temperature affect the phase of a substance?

Back

Temperature changes can increase or decrease the energy of molecules, leading to phase changes between solid, liquid, and gas.

Front

What is the significance of molecular energy in determining the phase of a substance?

Back

The amount of energy in the molecules determines their movement and arrangement, influencing whether the substance is a solid, liquid, or gas.

Front

What happens to a liquid when energy is removed from it?

Back

When energy is removed from a liquid, it may change phase to a solid as the molecular movement slows down.

Front

What is the role of energy transfer in phase changes?

Back

Energy transfer is crucial for phase changes; adding energy can cause melting or vaporization, while removing energy can cause freezing or condensation.

Front

How can you identify which container has the highest energy among substances?

Back

The container with the substance that is in a gaseous state typically has the highest energy due to the increased movement of its molecules.

Front

What does it mean if a liquid does not change phase despite energy being added?

Back

It means that the molecular attraction is stronger than the energy added, preventing a phase change.