Molecular models in chemistry education at university and upper secondary school - structure of amides

• Autorzy: Kolář Karel , Doležal Rafael , Karásková Natálie , Maltsevskaya Nadezhda V. , Křížková Šárka

Identyfikatory

DOI

10.2478/cdem-2019-0003

Warianty tytułu

PL

Modele molekularne w nauczaniu chemii w szkole średniej i wyższej - struktura amidów

• Języki publikacji: EN

Abstrakty

EN

Molecular models derived from results of quantum-chemical calculations present an important category of didactic instruments in chemistry education in upper secondary school and, particularly, at university. These models can be used especially as tools for supporting the students’ understanding by visual learning, which can adequately address complexity of many chemical topics, incorporate appropriate didactic principles, as well as utilize the benefits brought up by the actual information technology. The proposed molecular models are non-trivial examples of didactic application of computational chemistry techniques in illustration of electron interactions in amidic group, namely the interaction of the free electron pair on the nitrogen atom with the carbonyl group and also the interaction of atoms in the amide group with other surrounding atoms in the molecule. By these molecular models it is possible to explain acid-base properties of amides applying knowledge of electron density distribution in the molecules and the resulting electrostatic potential. Presentation of the structure and properties of the amides within education is important also for the reason that amidic functions are involved in many important natural substances (e.g. proteins, peptides, nucleic acids or alkaloids), synthetic macromolecular substances (e.g. Silon) or pharmaceutical preparations (e.g. paracetamol). Molecular models then serve to support better understanding of the structure of these substances and, in relation to it, their properties.

Słowa kluczowe

EN

acidity; amides; basicity; electrostatic potential; molecular models

PL

kwasowość; amidy; zasadowość; potencjał elektrostatyczny; modele molekularne

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Chemistry-Didactics-Ecology-Metrology
• Rocznik: 2019
• Tom: R. 24, NR 1-2
• Strony: 45--51
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Kolář Karel

• Department of Chemistry, Faculty of Sciences, University of Hradec Kralove, Rokitanskeho 62, 50003 Hradec Králové, Czech Republic
• Department of Chemistry and Chemical Education, Faculty of Education, Charles University, M.D. Rettigove 4, 116 39 Prague, Czech Republic

autor

Doležal Rafael

• Department of Chemistry, Faculty of Sciences, University of Hradec Kralove, Rokitanskeho 62, 50003 Hradec Králové, Czech Republic

autor

Karásková Natálie

• Department of Chemistry, Faculty of Sciences, University of Hradec Kralove, Rokitanskeho 62, 50003 Hradec Králové, Czech Republic

autor

Maltsevskaya Nadezhda V.

• State Budget Professional Education Institution, Kosygina 17(3), 119334 Moscow, Russia

autor

Křížková Šárka

• Department of Information Technologies, Faculty of Informatics and Management, University of Hradec Kralove, Rokitanskeho 62, 50003 Hradec Králové, Czech Republic

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).