Amplify Phase Change Assessment Review

Front

What does it suggest if a liquid turns into a solid when energy is removed?

Back

It suggests that the liquid has stronger molecular attractions.

Front

Which element has the weakest molecular attraction based on melting points?

Back

Mercury, because it has the lowest melting point.

Front

What does a higher freezing point indicate about a substance's molecular attraction?

Back

A higher freezing point suggests stronger molecular attractions.

Front

What happens to the molecules of an ice cube as it melts?

Back

The molecules begin moving around each other.

Front

How do liquids with different molecular attractions respond to energy transfer?

Back

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

Front

Define molecular attraction.

Back

Molecular attraction refers to the forces that hold molecules together.

Front

What is the freezing point of water?

Back

0°C.

Front

What is the significance of melting points in understanding molecular attraction?

Back

Melting points indicate the strength of molecular attractions; lower melting points suggest weaker attractions.

Front

Explain the phase change from solid to liquid.

Back

It occurs when energy is added, causing molecules to move apart.

Front

What is the freezing point of ethanol?

Back

-114°C.