This is a free response question written in format like AP does. This question revolves around density and basic data analysis skills students might learn at the beginning of a PreAP Chemistry course. Each successive part of an FRQ (a-f here) potentially builds on itself and emphasizes a deeper understanding of the topic.
The first page is the question which I give to students as part of their first unit test, but this could be used as a quiz, classwork, or homework assignment. The second and third pages are scoring guidelines also written in an AP format.