Original Project
Atoms, Molecules, and States of Matter
Item AM062004: As water boils, the molecules become separated from each other.
What happens as liquid water boils?
- The molecules are destroyed.
- The mass of the molecules decreases.
- The molecules become separated from each other.
- The molecules break down into hydrogen and oxygen atoms.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1244 | 2922 | 43% |
| Grades | |||
| 6–8 | 694 | 1809 | 38% |
| 9–12 | 547 | 1105 | 50% |
| Gender | |||
| Male | 593 | 1395 | 43% |
| Female | 634 | 1488 | 43% |
| Primary Language | |||
| English | 1136 | 2600 | 44% |
| Other | 95 | 291 | 33% |
- Disciplinary Core Ideas
- PS1.A In a liquid, the molecules are constantly in contact with others; in a gas, they are widely spaced except when they happen to collide. In a solid, atoms are closely spaced and may vibrate in position but do not change relative locations.
PS1.A The changes of state that occur with variations in temperature or pressure can be described and predicted using these models of matter. - Notes
- See NGSS performance expectation MS-PS1-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a substance when thermal energy is added or removed.