Search for dissertations about: "Chemical Bonding"

Showing result 1 - 5 of 317 swedish dissertations containing the words Chemical Bonding.

  2. 1. Models of chemical bonding : Representations Used in School Textbooks and by Teachers and their Relation to Students´Difficulties in Understanding

    Author : Anna Bergqvist; Michal Drechsler; Shu-Nu Chang Rundgren; Pernilla Nilsson; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; pedagogical content knowledge; chemical bonding; textbook analysis; students learning difficulties; models in science education; Kemi; Chemistry;

    Abstract : This thesis focuses on how school textbooks and teachers present models of chemical bonding in upper secondary schools in Sweden. In science, as well as in science education, models play a central role, but research has shown that they often are difficult for students to understand. READ MORE

  4. 2. Computational Studies of Chemical Interactions: Molecules, Surfaces and Copper Corrosion

    Author : Joakim Halldin Stenlid; Tore Brinck; Thomas Bligaard; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; computational chemistry; density functional theory; chemical interactions; reactivity descriptors; copper corrosion; surface and materials science; nucleophilic substitution reactions; heterogeneous catalysis; transition metal oxides; nanotechnology; beräkningskemi; täthetsfunktionalteori; kemiska interaktioner; reaktivitetsdeskriptorer; kopparkorrosion; yt- och materialvetenskap; nukleofila substitutionsreaktioner; heterogen katalys; överångsmetalloxider; nanoteknologi; Kemi; Chemistry;

    Abstract : The chemical bond – a corner stone in science and a prerequisite for life – is the focus of this thesis. Fundamental and applied aspects of chemical bonding are covered including the development of new computational methods for the characterization and rationalization of chemical interactions. READ MORE

  5. 3. Teaching and learning of chemical bonding models : Aspects of textbooks, students’ understanding and teachers’ professional knowledge

    Author : Anna Bergqvist; Shu-Nu Chang Rundgren; Pernilla Nilsson; Ingo Eilks; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemical bonding models; Pedagogical content knowledge; Teachers professional development; Chemistry education; Students learning; Kemi; Chemistry;

    Abstract : Despite the growing importance of science and technology in society, school students consider these subjects irrelevant and hard to learn. Teachers must therefore know how to teach science in ways that enhance students’ understanding and interest. READ MORE

  6. 4. Synthesis, Properties and Bonding in Hume-Rothery Transition-metal Gallides and Indides

    Author : Per Viklund; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Material technology; Kemi; Chemistry; Bonding; Structural stability; Electronic-structure; Neutron diffraction; X-ray diffraction; Atomic Structure; Intermetallics; Hume--Rothery; Materiallära; materialteknik; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Abstract : In this work the intermetallic systems formed by transition-metals from group 5 to 9 with Ga, In and Zn have been experimentally and theoretically studied in detail. Syntheses, compositional analyses, X-ray and neutron diffraction (single crystal as well as powder) and measurements of physical properties, e.g. READ MORE

  7. 5. Facets of chemical bonding that enhance or encumber conceptual understanding

    Author : Anders Nimmermark; Chalmers tekniska högskola; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; student surveys; chemical bonding; secondary school; tertiary education; coordination chemistry; conceptual understanding;

    Abstract : Chemical bonding is a vast subject, rich in abstract concepts and advanced and less-advanced explanatory models that the learner has to master. In this context, the teaching of chemical bonding at the secondary school level is extremely important, as it has the potential to increase or hinder students’ further understanding of bonding. READ MORE