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Structures and Conformations Molecular models are used to demonstrate the conformations of alkanes and cycloalkanes.
Alkanes / Cycloalkanes |
Molecular Properties / Structure |
Nomenclature / Units / Symbols |
Stereochemistry
Stoichiometry The Stoichiometry group contains three groups: Exploding Soap Bubbles: Hydrogen + Oxygen; Acid-Base Titrations and Animation; and Redox Titration and Animation.
Stoichiometry
Gas Stoichiometry Gas is generated from one mole of liquid of solid and the volume is measured using a gas collection system.
Interactive Demonstrations for Mole Ratios and Limiting ReagentsCrystal Wood and Bryan Breyfogle The objective of this study was to develop interactive lecture demonstrations based on conceptual-change learning theory. Experimental instruction was designed for an introductory chemistry course for nonmajors to address misconceptions related to mole ratios and limiting reagents Wood, Crystal; Breyfogle, Bryan. J. Chem. Educ.2006, 83, 741.
Learning Theories |
Reactions |
Stoichiometry |
Student-Centered Learning
Revisiting Molar Mass, Atomic Mass, and Mass Number: Organizing, Integrating, and Sequencing Fundamental Chemical ConceptsStephen DeMeo It is often confusing for introductory chemistry students to differentiate between molar mass, atomic mass, and mass number as well as to conceptually understand these ideas beyond a surface level. One way to improve understanding is to integrate the concepts, articulate their relationships, and present them in a meaningful sequence. DeMeo, Stephen. J. Chem. Educ.2006, 83, 617.
Descriptive Chemistry |
Enrichment / Review Materials |
Nomenclature / Units / Symbols |
Physical Properties
Evaluating Students' Conceptual Understanding of Balanced Equations and Stoichiometric Ratios Using a Particulate DrawingMichael J. Sanger A total of 156 students were asked to provide free-response balanced chemical equations for a classic multiple-choice particulate-drawing question first used by Nurrenbern and Pickering. The balanced equations and the number of students providing each equation are reported in this study. The most common student errors included a confusion between the concepts of subscripts and coefficients and including unreacted chemical species in the equation. Sanger, Michael J. J. Chem. Educ.2005, 82, 131.
