Amplify Phase Change Assessment Review

Front

What happens during freezing at the molecular level?

Back

Kinetic energy decreases, allowing molecular attraction to pull molecules closer together.

Front

What describes the movement of ice cube's molecules as it melts?

Back

The molecules began moving around each other.

Front

How do different molecular attractions affect phase changes in liquids?

Back

The liquid with weaker molecular attractions will change phase more easily.

Front

What property of ice remains unchanged during melting?

Back

The molecular attraction between its molecules.

Front

Which substance has the strongest molecular attraction based on freezing points: Water (0°C), Ethanol (-114°C), or Benzene (5.5°C)?

Back

Benzene, because its higher freezing point suggests stronger molecular attractions.

Front

Define phase change.

Back

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

Front

What is kinetic energy?

Back

The energy that an object possesses due to its motion.

Front

Explain molecular attraction.

Back

The force that holds molecules together, affecting their state of matter.

Front

What occurs during melting?

Back

Molecules gain kinetic energy, allowing them to move apart and change from solid to liquid.

Front

What is the freezing point?

Back

The temperature at which a liquid turns into a solid.