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Elemental Chem LabAntonio Joaquín Franco Mariscal Three puzzles use the symbols of 45 elements to spell the names of 32 types of laboratory equipment usually found in chemical labs. Franco Mariscal, Antonio Joaquín. J. Chem. Educ.2008, 85, 1370.
Laboratory Equipment / Apparatus |
Nomenclature / Units / Symbols |
Periodicity / Periodic Table
Classifying Matter: A Physical Model Using Paper ClipsBob Blake, Lynn Hogue, and Jerry L. Sarquis By using colored paper clips, students can represent pure substances, mixtures, elements, and compounds and then discuss their similarities and differences. This model is advantageous for the beginning student who would not know enough about the detailed composition of simple materials like milk, brass, sand, and air to classify them properly. Blake, Bob; Hogue, Lynn; Sarquis, Jerry L. J. Chem. Educ.2006, 83, 1317.
Molecular Properties / Structure |
Nomenclature / Units / Symbols |
Solids |
Student-Centered Learning
Valence, Oxidation Number, and Formal Charge: Three Related but Fundamentally Different ConceptsGerard Parkin The purpose of this article is to clarify the terms valence, oxidation number, coordination number, formal charge, and number of bonds and illustrate how the valence of an atom in a molecule provides a much more meaningful criterion for establishing the chemical reasonableness of a molecule than does the oxidation number. Parkin, Gerard. J. Chem. Educ.2006, 83, 791.
