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ARC-Easy / Mercury_7212048 / Which statement best describes the motion of the molecules of a solid object?

Problem

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question

Which statement best describes the motion of the molecules of a solid object?

choices

  • They vibrate in place within a fixed volume.
  • They move around freely within a fixed volume.
  • They vibrate in place and take the shape of a container.
  • They move around freely and take the shape of a container.

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