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 SC044004: If a piece of wax is removed from a ball of wax, the mass of the ball of wax would change but its melting point would stay the same.
A student has a ball of wax. The wax is a pure substance. The student removes a small piece of wax from the ball. Which of the following statements is TRUE about what happens to the mass and melting point of the ball of wax after the piece is removed?
- Both the mass and melting point of the ball of wax change.
- Both the mass and melting point of the ball of wax stay the same.
- The mass of the ball of wax changes, and its melting point stays the same.
- The melting point of the ball of wax changes, and its mass stays the same.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1474 | 2862 | 52% |
| Grades | |||
| 6–8 | 755 | 1649 | 46% |
| 9–12 | 712 | 1205 | 59% |
| Gender | |||
| Male | 737 | 1368 | 54% |
| Female | 711 | 1433 | 50% |
| Primary Language | |||
| English | 1319 | 2488 | 53% |
| Other | 122 | 304 | 40% |