Students' predictions about the sensory properties of chemical compounds: Additive versus emergent frameworks

We investigated general chemistry students' intuitive ideas about the expected properties of the products of a chemical reaction. In particular, we analyzed college chemistry students' predictions about the color, smell, and taste of the products of chemical reactions represented at the molecular level. The study was designed to explore the extent to which novice learners intuitively use an additive framework to predict the properties of the product, rather than an approach that recognizes the emergent nature of the properties of chemical compounds. To this end, we used a mixed-methods research approach based on answers to multiple-choice questions and individual interviews with students enrolled in the first year of an introductory general chemistry course for science and engineering majors. Our results indicate that most students at this level rely on an additive heuristic to predict the properties of chemical compounds, overlooking the possibility of emergent properties resulting from the interaction of the atoms that compose the system. Chemistry instructors and chemical educators thus need to intentionally design learning opportunities for students to recognize and differentiate additive and emergent properties in a variety of contexts. © 2007 Wiley Periodicals, Inc. Sci. Ed92:96–114, 2008

[1]  J. Watson,et al.  Progression in high school students'(aged 16–18) conceptualizations about chemical reactions in solution , 2001 .

[2]  Ibrahim A. Halloun,et al.  Common sense concepts about motion , 1985 .

[3]  Investigación Didáctica.  MÁS ALLÁ DE LAS IDEAS PREVIAS COMO DIFICULTADES DE APRENDIZAJE: LAS PAUTAS DE PENSAMIENTO, LAS CONCEPCIONES EPISTEMOLÓGICAS Y LAS ESTRATEGIAS METACOGNITIVAS DE LOS ALUMNOS DE CIENCIAS , 2000 .

[4]  Patrick J. Hayes,et al.  The Naive Physics Manifesto , 1990, The Philosophy of Artificial Intelligence.

[5]  Keith S. Taber,et al.  BUILDING THE STRUCTURAL CONCEPTS OF CHEMISTRY: SOME CONSIDERATIONS FROM EDUCATIONAL RESEARCH , 2001 .

[6]  Vicente A Talanquer,et al.  Commonsense Chemistry: A Model for Understanding Students' Alternative Conceptions , 2006 .

[7]  Jon Ogborn,et al.  A causal framework for analysing alternative conceptions , 1992 .

[8]  Marilyne Stains,et al.  International Journal of Science Education Classification of Chemical Substances Using Particulate Representations of Matter: an Analysis of Student Thinking Classification of Chemical Substances Using Particulate Representations of Matter: an Analysis of Student Thinking , 2022 .

[9]  M. Nakhleh.  Why some students don't learn chemistry: Chemical misconceptions , 1992 .

[10]  D. Hilton.  The Cognitive Basis of Science: Thinking about causality: pragmatic, social and scientific rationality , 2002 .

[11]  M. Resnick,et al.  Thinking in Levels: A Dynamic Systems Approach to Making Sense of the World , 1999 .

[12]  Pier Luigi Luisi,et al.  Emergence in Chemistry: Chemistry as the Embodiment of Emergence , 2002 .

[13]  U. Wilensky,et al.  Complex Systems in Education: Scientific and Educational Importance and Implications for the Learning Sciences , 2006 .

[14]  Cindy E. Hmelo-Silver,et al.  Understanding Complex Systems: Some Core Challenges , 2006 .

[15]  Juan Miguel Campanario,et al.  Más allá de las ideas previas como dificultades de aprendizaje , 2000 .

[16]  Laurence Viennot.  Reasoning in Physics: The Part of Common Sense , 2001 .

[17]  R. Driver,et al.  Making Sense of Secondary Science: Research into children’s ideas , 1993 .

[18]  B. Andersson,et al.  The experiential gestalt of causation: a common core to pupils’ preconceptions in science , 1986 .

[19]  Valerie J. Caracelli,et al.  Toward a Conceptual Framework for Mixed-Method Evaluation Designs , 1989 .

[20]  B. Andersson.  Pupils' Conceptions of Matter and its Transformations (age 12-16) , 1990 .

[21]  R. Driver,et al.  Children's Ideas in Science , 1985 .

[22]  Michelene T. H. Chi,et al.  Commonsense Conceptions of Emergent Processes: Why Some Misconceptions Are Robust , 2005 .

[23]  David E. Penner,et al.  Explaining systems: Investigating middle school students' understanding of emergent phenomena , 2000 .

[24]  D. Allchin.  The Dilemma of Dominance , 2005 .

[25]  Pamela J. Garnett,et al.  Students' Alternative Conceptions in Chemistry: A Review of Research and Implications for Teaching and Learning , 1995 .

[26]  M. Pesa,et al.  Hacia un modelo integrador para el aprendizaje de las ciencias , 2000 .

[27]  Bat-Sheva Eylon,et al.  Is an atom of copper malleable , 1986 .