Development and validation of the implicit information from Lewis structures instrument (IILSI): do students connect structures with properties?

作者：Cooper Melanie M^*; Underwood Sonia M; Hilley Caleb Z

来源：Chemistry Education: Research and Practice , 2012, 13(3): 195-200.

DOI：10.1039/c2rp00010e

Lewis structures are a simplified two dimensional %26quot;cartoon%26quot; of molecular structure that allow a knowledgeable user to predict the types of properties a particular substance may exhibit. However, prior research shows that many students fail to recognize these structure-property connections and are unable to decode the information contained in the structures, thus resulting in students%26apos; inability to use Lewis structures for their intended purposes. We have developed a survey instrument using responses from student interviews and open-ended questions from a previous research study to determine students%26apos; beliefs about the information that can be obtained from Lewis structures. The survey was found to be reliable and valid through multiple administrations to a total of 3203 students, including first-and second-semester general chemistry and organic chemistry students, junior/senior level undergraduate chemistry students, and graduate level chemistry students. We propose that this survey can be a useful informational tool for instructors for a wide range of courses where students%26apos; understanding of structure-function relationships is important.

• 出版日期2012