Original Project
Substances, Chemical Reactions, and Conservation of Matter
A pure substance has characteristic properties, such as density, a boiling point, and solubility, all of which a…
Item SC100004: Two liquids with the same boiling point and color could be the same substance. (This item uses a table that lists properties of the liquids.)
Using the information about the four liquids in the table below, which of the following liquids could be the same substance?
|
Volume (mL) |
Boiling Point (°C) |
Color | |
| Liquid 1 | 25 | 100 | colorless |
| Liquid 2 | 50 | 100 | colorless |
| Liquid 3 | 25 | 78 | colorless |
| Liquid 4 | 25 | 100 | yellow |
- Liquids 1 and 2
- Liquids 1 and 3
- Liquids 1 and 4
- None of the liquids could be the same substance.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 928 | 2481 | 37% |
| Grades | |||
| 6–8 | 391 | 1262 | 31% |
| 9–12 | 535 | 1211 | 44% |
| Gender | |||
| Male | 456 | 1201 | 38% |
| Female | 456 | 1228 | 37% |
| Primary Language | |||
| English | 802 | 2139 | 37% |
| Other | 101 | 281 | 36% |
- Disciplinary Core Ideas
- PS1.A Each pure substance has characteristic physical and chemical properties (for any bulk quantity under given conditions) that can be used to identify it.
- NRC Framework
- Patterns: …objects can be classified into groups on the basis of similarities of visible or microscopic features or on the basis of similarities of function…