TIGER

Other Resources: 30 results
Interactive Molecular Orbitals  William F. Coleman
The majority of Introductory Chemistry texts provide students with an adequate introduction to the visual aspects of the molecular orbital model for homonuclear diatomic molecules. The treatment of heteronuclear diatomic and polyatomic molecules is less uniform. Heteronuclear diatomics, when mentioned, are invariably treated as being derived from homonuclear diatomics. While the atomic orbital energy level differences in heteronuclear diatomics is sometimes pictured, the consequences of those differences for the resultant molecular orbitals are rarely discussed. The discussion of polyatomic molecular orbitals in these texts is limited to showing that parallel p-orbitals produce delocalized pi molecular orbitals. The molecules typically mentioned in this context are benzene, nitrate ion and carbonate ion. However, It is rarely pointed out that the six p-orbitals in benzene would form 6 pi molecular orbitals, and that only one of these orbitals would look like the picture in the text.These interactive modules are designed to clarify this subject.
MO Theory
Molecular Orbitals  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
MO Theory |
Magnetic Properties
Delocalized Electrons  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Resonance Theory |
MO Theory
Hybrid Orbitals  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Molecular Properties / Structure |
MO Theory
Interactive Molecular Orbital Diagrams  William F. Coleman
Here is an application for constructing the molecular orbital electron configurations of heteronuclear diatomic molecules. Energy level diagrams are given for the two different cases encountered in heteronuclear diatomics of the first short period (Li2 - Ne2). This is a useful tool for having students explore questions of bond order, magnetic properties and numbers of unpaired electrons.
Covalent Bonding |
MO Theory |
Enrichment / Review Materials
Heteronuclear Diatomic Molecular Orbital Formation  William F. Coleman
Here is a set of movies that demonstrates heteronuclear diatomic molecular orbital formation. The orbitals start at a distance where there is little or no interatomic interaction and move to the appropriate bond distance. Orbital phase is shown by the different colors.
Covalent Bonding |
MO Theory |
Enrichment / Review Materials
Hückel Determinant Solver  Robert M. Hanson
Generates energy diagrams for simple Hückel molecular orbital systems using JavaScript. You can specify the determinant or select one for a specific compound from a list.
Computational Chemistry |
MO Theory |
Theoretical Chemistry |
Enrichment / Review Materials
Inorganic Molecules; A Visual Database  Charles E. Ophardt, Evan M. Davis, Dustin Underwood
Inorganic Molecules: A Visual Data Base contains text and graphics describing 66 molecules and ions commonly used as examples in general chemistry courses. For each molecule, fifteen molecular properties are presented visually by eight or nine different molecular models created by the CAChe Scientific Molecular Modeling program.
Atomic Properties / Structure |
MO Theory |
Molecular Properties / Structure
Restricted Hartree-Fock SCF Calculations Using Microsoft Excel  Mark A. Freitag, Cortney A. Boots, Taylor R. Page
Courses in computational chemistry are increasingly common at the undergraduate level. Excellent user-friendly programs, which make the execution of ab initio calculations quite simple, are available. However, there is a danger that the underlying SCF procedure (usually coupled with contracted Gaussian atomic orbital basis sets) can become a ?black box? for the student. This Microsoft Excel spreadsheet contains all the essential elements of far more complicated ab initio calculations, but on the simplest possible molecular system.
Computational Chemistry |
Mathematics / Symbolic Mathematics |
MO Theory |
Quantum Chemistry |
Theoretical Chemistry
The Reaction Rolodex; A Web-Based System for Learning Reactions in Organic Chemistry  Eric Mahan
This Web-based system of note cards has been developed to aid students in learning the vast number of reactions encountered in organic chemistry. A thorough knowledge of these reactions is essential for success in first- and second-semester organic chemistry courses. The reactions are organized by functional group and can be chosen from a menu at the left side of the Web page. Once a particular reaction has been selected, the main frame displays the reactant(s) and reagent(s) along with a question mark in place of the product. After considering the reaction as long as needed, the user can click the question mark to reveal the reaction product. Clicking the product will again hide the answer and regenerate the question mark so that the reaction can be practiced again. Selecting other reactions from the menu on the left allows them to be practiced in the same manner.
Reactions
Chemical Reactions (Netorials)  Rachel Bain, Mithra Biekmohamadi, Liana Lamont, Mike Miller, Rebecca Ottosen, John Todd, and David Shaw
Chemical Reactions: this is a resource in the collection "Netorials". The Netorials cover selected topics in first-year chemistry including: Chemical Reactions, Stoichiometry, Thermodynamics, Intermolecular Forces, Acids & Bases, Biomolecules, and Electrochemistry.
Reactions
Spontaneous Processes and Molecular Probability  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions
Rates of Spontaneous Processes  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions
What Chemists Do  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions
Chemical Reactions  American Chemical Society
ACS Science for Kids activities exploring chemical reactions.
Reactions
Energy and the Formation of Ions  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions |
Thermodynamics
Le Chatelier's Principle  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions |
Equilibrium
The Effect of a Change in Pressure  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions |
Equilibrium
Alcohols  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Alcohols |
Addition Reactions
Named Reactions  Michael B. Smith
This Web site lists 95 of the most important named reactions in organic chemistry. Each is linked to a Web page that gives the primary reference and equations for one or more recent literature examples that illustrate the use of the reaction.
Nomenclature / Units / Symbols |
Reactions
Named Reagents  Hans J. Reich
This convenient list provides structures of more than 160 common reagents used in organic chemistry that are often referred to by the originator's name, by an acronym, or by a trade name.
Nomenclature / Units / Symbols |
Reactions
Bond Enthalpies and Exothermic or Endothermic Reactions  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Calorimetry / Thermochemistry |
Reactions
The Effect of Temperature  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions |
Kinetic-Molecular Theory
Macroscopic and Microscopic Views of a Chemical Reaction  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Reactions |
Molecular Properties / Structure
Building  American Chemical Society
ACS Science for Kids activities exploring the chemistry behind building many everyday objects and structures.
Industrial Chemistry |
Physical Properties |
Reactions |
Consumer Chemistry
Chemical & Physical Change  American Chemical Society
Everything you see and touch has the ability to change. Sometimes substances change to form new substances. This is called a chemical change. Other times substances change but keep the same identity. This is called a physical change. Try these activities to learn more about chemical and physical change.
Acids / Bases |
Reactions |
Water / Water Chemistry |
Solutions / Solvents |
Consumer Chemistry
Graphing  American Chemical Society
ACS Science for Kids activities explore the aspects of recording scientific data and presenting that data in useful graphs.
Reactions |
Chemometrics |
Physical Properties |
Transport Properties |
Plant Chemistry
Toys-ACS Science for Kids  American Chemical Society
ACS Science for Kids activities explore how chemistry can be used to make toys.
Gases |
Polymerization |
Water / Water Chemistry |
Physical Properties |
Lipids |
Reactions
Air-Solids, Liquids & Gases  American Chemical Society
ACS Science for Kids activities explore the properties of gases.
Atmospheric Chemistry |
Acids / Bases |
Reactions |
Applications of Chemistry |
Water / Water Chemistry |
Gases
Characteristics of Materials  American Chemical Society
What makes diapers absorbent? Is peanut butter stickier than syrup or jelly? Strong, stretchy, sticky, or sweet—everything around us has special properties which make them unique. See if you can identify and compare the characteristics of materials.
Industrial Chemistry |
Physical Properties |
Reactions |
Consumer Chemistry |
Gases |
Carbohydrates |
Proteins / Peptides |
Crystals / Crystallography |
Water / Water Chemistry |
Plant Chemistry |
Dyes / Pigments |
Lipids |
Molecular Properties / Structure |
Applications of Chemistry |
Nutrition |
Acids / Bases |
Chromatography |
Magnetic Properties |
Metals |
Polymerization |
Solutions / Solvents |
Descriptive Chemistry |
Food Science