Amplify Phase Change Assessment Review

Front

What is temperature in relation to molecular motion?

Back

Temperature measures the average kinetic energy of molecules in a substance.

Front

How do weaker molecular attractions affect phase changes?

Back

A liquid with weaker molecular attractions will change phase more easily than a substance with stronger attractions.

Front

Why does Liquid A solidify while Liquid B remains liquid when cooled?

Back

Liquid A has a stronger molecular attraction than Liquid B.

Front

What is a phase change?

Back

A phase change involves a visible change caused by a change in the molecules' freedom of movement.

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

What happens to molecular motion at higher temperatures?

Back

Molecular motion increases as temperature rises.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion, which increases with temperature.

Front

What is the relationship between temperature and phase changes?

Back

Temperature changes can lead to phase changes by altering molecular motion and energy.

Front

What occurs during melting?

Back

During melting, a solid absorbs energy and its molecules gain enough kinetic energy to overcome molecular attractions.

Front

What is freezing?

Back

Freezing is the process where a liquid loses energy and its molecules become fixed in place, forming a solid.