Science

6th -

8th

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Changes of State

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10 questions

  • 1. Multiple Choice
    30 seconds
    1 pt

    How does thermal energy play a role in particle motion and changes of state?

    Thermal energy is a term that refers to temperature

    Increasing an object's thermal energy increases particle motion and can cause a change of state.

    Decreasing an object's thermal energy increases particle motion and can cause a change of state.

    Thermal energy is the energy added from a heat source.

  • 2. Multiple Choice
    30 seconds
    1 pt

    What happens to particles during changes of state between solid and liquid.

    Particles move so fast they break from their fixed position.

    Particles melt and become a liquid.

    Particles find a circular orbit around an atom's nucleus.

    Particles stop vibrating and change into their liquid form.

  • 3. Multiple Choice
    30 seconds
    1 pt

    What is a main difference between boiling and evaporation?

    Boiling requires an outside power source and the evaporation process is internal.

    Evaporation takes place at one temperature, boiling takes place at all temperatures.

    Boiling takes place at one temperature, evaporation takes place at all temperatures.

    Boiling takes can only occur through mechanical methods.

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