Original Project
Substances, Chemical Reactions, and Conservation of Matter
Item SC064008: Two liquids with the same density and color but different boiling points are different substances. (This item uses a table that lists properties of the liquids.)
A student determines the volume, density, and boiling point of three colorless liquids and lists them in the table below.
|
Volume (mL) |
Density (g/mL) |
Boiling Point (°C) |
Color | |
| Liquid 1 | 10 | 0.79 | 56 | colorless |
| Liquid 2 | 50 | 0.79 | 78 | colorless |
| Liquid 3 | 10 | 1.0 | 100 | colorless |
Could any of the liquids be made of the same substance and why?
- Liquids 1 and 2 could be the same substance because they have the same density.
- Liquids 1 and 3 could be the same substance because they have the same volume.
- Liquids 1, 2, and 3 could be the same substance because they are all clear liquids.
- None of the liquids could be the same substance because they have different combinations of density, boiling point, and color.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 1941 |
6–8 n = 823 |
9–12 n = 1098 |
Male n = 910 |
Female n = 991 |
English n = 1693 |
Other n = 189 |
||
| A. | Liquids 1 and 2 could be the same substance because they have the same density. | 28% | 27% | 28% | 28% | 28% | 29% | 20% |
| B. | Liquids 1 and 3 could be the same substance because they have the same volume. | 17% | 19% | 15% | 16% | 18% | 17% | 20% |
| C. | Liquids 1, 2, and 3 could be the same substance because they are all clear liquids. | 14% | 13% | 14% | 14% | 13% | 13% | 23% |
| D. | None of the liquids could be the same substance because they have different combinations of density, boiling point, and color. | 42% | 41% | 43% | 42% | 41% | 42% | 37% |