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What happens as liquid water boils?

  1. The molecules are destroyed.
  2. The mass of the molecules decreases.
  3. The molecules become separated from each other.
  4. The molecules break down into hydrogen and oxygen atoms.
Distribution of Responses
Chart showing distrubtion of responses for Item AM062004
Students Responding Correctly
Group Correct Total Percent
Overall 1244 2922 43%
  6–8 694 1809 38%
  9–12 547 1105 50%
Primary Language

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