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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.
Stoichiometry : StoicNeeds (10 Variations) You have a known mass of a compound X and react it to form compound Y. What is the minimum information you need to find the mass of Y produced?
Concept Maps for General Chemistry Boyd L. Earl Two concept maps have been developed to represent the organization of the material in a first-semester general chemistry course. By providing these maps to students and referring to them in class, it is hoped that the instructor can assist students in maintaining a grasp of the "big picture" during the progress of the course. Earl, Boyd L. J. Chem. Educ.2007, 84, 1788.
Atomic Properties / Structure |
Gases |
Molecular Properties / Structure |
Stoichiometry |
Periodicity / Periodic Table
Empirical Formulas and the Solid State: A ProposalWilliam B. Jensen This brief article calls attention to the failure of most introductory textbooks to point out explicitly the fact that nonmolecular solids do not have molecular formulas and suggests some practical remedies for improving textbook coverage of this subject. The inadequacies of the terms "empirical formula" and "molecular formula" are also discussed, and the terms "relative compositional formula" and "absolute compositional formula" are proposed as more appropriate alternatives. Jensen, William B. J. Chem. Educ.2004, 81, 1772.
Solid State Chemistry |
Solids |
Stoichiometry |
Nomenclature / Units / Symbols
Using Knowledge Space Theory To Assess Student Understanding of StoichiometryRamesh D. Arasasingham, Mare Taagepera, Frank Potter, and Stacy Lonjers Using the concept of stoichiometry we examined the ability of beginning college chemistry students to make connections among the molecular, symbolic, and graphical representations of chemical phenomena, as well as to conceptualize, visualize, and solve numerical problems. Students took a test designed to follow conceptual development; we then analyzed student responses and the connectivities of their responses, or the cognitive organization of the material or thinking patterns, applying knowledge space theory (KST). The results reveal that the students' logical frameworks of conceptual understanding were very weak and lacked an integrated understanding of some of the fundamental aspects of chemical reactivity. Arasasingham, Ramesh D.; Taagepera, Mare; Potter, Frank; Lonjers, Stacy. J. Chem. Educ.2004, 81, 1517.
