ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item RG208001: The chemical energy of the products of photosynthesis is greater than the chemical energy of the reactants (item includes bar graphs).
Photosynthesis is a chemical reaction that occurs in a plant as the sun shines on it. During this reaction, water and carbon dioxide (the reactants) react to form sugars and oxygen (the products). Which of the following graphs shows how the chemical energy of the reactants compares to the chemical energy of the products?
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 519
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 385 | 1142 | 34% |
| Grades | |||
| 4–5 | N/A | N/A | N/A |
| 6–8 | 249 | 694 | 36% |
| 9–12 | 136 | 448 | 30% |
| Gender | |||
| Male | 175 | 555 | 32% |
| Female | 204 | 566 | 36% |
| Primary Language | |||
| English | 351 | 1032 | 34% |
| Other | 31 | 99 | 31% |