TIGER

Other Resources: 65 results
Computer Simulations of Salt Solubility  Victor M. S. Gil, João C. M. Paiva
Computer Simulations of Salt Solubility provides an animated, visual interpretation of the different solubilities of related salts based on simple entropy changes associated with dissolution: configurational disorder and thermal disorder. This animation can also help improve students conceptual understanding of chemical equilibrium before any quantitative interpretation of equilibrium constants is attempted.
Computational Chemistry |
Solutions / Solvents |
Thermodynamics |
Equilibrium |
Precipitation / Solubility
Saturated and Supersaturated Solutions  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Precipitation / Solubility
Calcium tartrate and treatment of wine waste-waters  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Equilibrium
The Solubility Product  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Equilibrium
Measuring the Composition of a Solution  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Ideal Solutions: Raoult's Law  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Solution Concentrations Lecture Demonstrations  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Dilution of Ingested Glucose  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Solution Concentrations  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Diluting and Mixing Solutions  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Colligative Properties of Solutions  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Physical Properties
Sugar Solution Density; Canning, Maple Syrup, and Pousse Cafes  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties |
Solutions / Solvents
Low Glycemic Index Foods and Blood Glucose Concentration  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Nutrition
Solution Concentrations and Cells  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Biological Cells
Diluting and Mixing I.V. Solutions  Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Medicinal Chemistry
Solubility and Molecular Structure  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
Solubility and Molecular Structure in the Environment  Sarah Yue
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
The Common-Ion Effect  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
The Solubilities of Salts of Weak Acids  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
Dilution in Mixing Zones  Jnelson1
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Water / Water Chemistry
Dissolving  American Chemical Society
ACS Science for Kids activities exploring the process of dissolving chemicals in solution.
Water / Water Chemistry |
Solutions / Solvents
Miscibility  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Liquids
Ksp and calcium fortification  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Nutrition
Solubility of calcium salts in foods  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Nutrition
Low solubility salts in dairy products - Calcium phosphate and lactate  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility |
Nutrition
Soap and Detergent  American Chemical Society
ACS Science for Kids activities explore the properties of soap in aqueous solutions.
Lipids |
Polymerization |
Water / Water Chemistry |
Solutions / Solvents
The Nobel Prize and Aqua Regia  Robert Hetue
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry |
Precipitation / Solubility
Principal Species and pH  Robert M. Hanson
Calculates concentrations of principal species in solutions using JavaScript. You can specify whether "1st-year" methods or mass-charge balance methods are used in the calculations. Solutions can be chosen from the included set or you can design your own.
Acids / Bases |
Titration / Volumetric Analysis |
pH |
Solutions / Solvents
Molecular Models of Compounds in Maple Syrup  William F. Coleman
This month's issue of J. Chem. Educ. includes articles by David Ball dealing with the chemical composition of honey (1) and maple syrup (2). The JCE Featured Molecules for this month are drawn from those papers. In prior months we have included sucrose, glucose, and fructose (3), and all of the naturally occurring amino acids (4) in the molecule collection. This month we add the molecules identified in Table 4 of ref 2 as probable contributors to the taste of maple syrup. This group of molecules could serve easily as a starting point for a variety of student activities in the area of taste. Students in non-majors courses could be asked to identify structural similarities and differences among the various molecules and could be introduced to functional groups. Students could look for other foods in which some of these molecules are found, and could begin to develop a list of molecules contributing to flavor. In the penultimate paragraph of the maple syrup paper there is a list of substances used as flavoring agents in artificial (maple) syrup. What molecules are in fenugreek and lovage that might be important in flavoring? What are the structures of the other molecules in that paragraph and what, if any, structural features do they have in common with the featured molecules? Students in organic or biochemistry courses could begin to explore the chemistry of taste in more detail. Good starting points for this work are The Chemistry of Taste: Mechanisms, Behaviors, and Mimics by Peter Given and Dulce Paredes (5) and the Chemical and Engineering News Web site (6), which includes a number of articles on this subject.
Descriptive Chemistry |
Solutions / Solvents |
Food Science |
Plant 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
Art-ACS Science for Kids  American Chemical Society
ACS Science for Kids activities exploring the chemistry involved in art.
Dyes / Pigments |
Applications of Chemistry |
Solutions / Solvents |
Physical Properties
Nitrogen Oxides (GCMP)  David M. Whisnant
Nitrogen Oxides: this is a resource in the collection "General Chemistry Multimedia Problems". Two of the most important nitrogen oxides, N2O4 and NO2, are in equilibrium with each other. We are interested in how this equilibrium shifts with temperature. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Equilibrium
How Accurate Is the Steady State Approximation  Lars Ole Haustedt, Jonathan M. Goodman
The steady-state approximation is commonly used in enzyme catalysis kinetics calculations, but how much error does the approximation introduce? This Java applet allows you to visually determine the accuracy of the steady-state and pre-equilibrium approximations.
Equilibrium
ChemPaths 104 W Mar 2  John W. Moore
Today in Chem 104: * Lecture: Chemical Equilibrium * Reading: Kotz: Ch. 16, Sec. 1-2 Moore: Ch. 14, Sec. 1-2 * Homework #6 due by 11:55 pm F Mar 4 * Quiz #4 given in second discussion section this week * Biomolecules Tutorial: Enzymes and Moodle Quiz due Today at 11:55 pm
Equilibrium
ChemPaths 104 F Mar 4  John W. Moore
Today in Chem 104: * Lecture: Problem-Solving Session * No assigned reading for today. * Homework #6 due by 11:55 pm Today!
Equilibrium
ChemPaths 104 M Mar 7  John W. Moore
Today in Chem 104: * Lecture: Chemical Equilibrium * Reading: Kotz: Ch. 16, Sec. 3-5 Moore: Ch. 14, Sec. 3-5 * Homework #7 due by 11:55 pm F Mar 11 * Quiz #5 given in second discussion section this week.
Equilibrium
ChemPaths 104 W Mar 9  John W. Moore
Today in Chem 104: * Lecture: Chemical Equilibrium * Reading: Kotz: Ch. 16, Sec.6 Moore: Ch. 14, Sec. 6, 8 * Homework #7 due by 11:55 pm F Mar 11 * Quiz #5 given in second discussion section this week.
Equilibrium
ChemPaths 104 F Mar 11  John W. Moore
Today in Chem 104: * Lecture: Problem-Solving Session * No assigned reading for today. * Homework #7 due by 11:55 pm Today!
Equilibrium
Equilibrium Constants Revisited  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
The Equilibrium State  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
The Equilibrium Constant  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
The Law of Chemical Equilibrium  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
Calculating the Extent of a Reaction  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
Successive Approximation  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
Effect of Adding a Reactant or Product  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
The Molecular View of Equilibrium  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium
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
Contrail. A Module from the Physical Chemistry On-Line Project  Franklin M. C. Chen
The condensation trail, or contrail, that trails behind a jet plane is an everyday observable phenomenon. These manmade cirrus clouds can persist for hours, or even days and can spread over thousands of square kilometers. This is a concern because clouds are major variables that control Earth's atmospheric temperature and climate. Understanding the impact of contrails on Earth's climate is an active area of research. Further, contrail formation can be examined in terms of the operative thermodynamic phenomena. The process of contrail formation involves combustion, cooling, and ice formation, all common topics in the undergraduate physical chemistry curriculum. The project when it is subdivided into separate manageable subjects is a good, comprehensive exercise for physical chemistry students.
Thermodynamics |
Equilibrium
Predicting the Direction of a Reaction  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
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
Buffer solutions and the stability of food additives  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Acids / Bases |
Equilibrium |
Nutrition
Buffer solutions and the production of food ingredients  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Acids / Bases |
Equilibrium |
Nutrition
The effect of polyols on the pH of buffer solutions in foods  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Acids / Bases |
Equilibrium |
Nutrition
ChemPaths 104 M Apr 11  John W. Moore
Today in Chem 104: * Lecture: pH; Acid-Base Equilibria; Ionization * Reading: Kotz: Ch. 17, Sec. 6-7 Moore: Ch. 16, Sec. 7-8 * Homework #10 due by 11:55 PM F Apr 15 * Quiz in second discussion section this week * Lab this week is #6, Acid and Base Solutions
pH |
Acids / Bases |
Equilibrium
The Equilibrium Constant in Terms of Pressure  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
Physical Properties
The pH of Solutions of Weak Acids  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
Acids / Bases
The pH of Solutions of Weak Bases  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
Acids / Bases
Vapor-Liquid Equilibrium  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
Phases / Phase Transitions / Diagrams
Equilibrium  Matthew Sandberg, Mike Bellamy
Using a visual approach, this applet is designed to help students learn to solve equilibrium calculations and also to help them gain a deeper understanding of the topic. It can be used by the instructor in the classroom as equilibrium topics are introduced. Sample exercises for students are included. The text is available in both English and Spanish.
Chemometrics |
Equilibrium |
Enrichment / Review Materials
Ionic Equilibria in Aqueous Solutions in Foods  Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Equilibrium |
Nutrition |
Aqueous Solution Chemistry
JavaScript Programs To Calculate Thermodynamic Properties Using Cubic Equations of State  Patrick J. Barrie
Cubic equations of state are widely used by chemists and chemical engineers to predict the thermodynamic properties of both pure substances and mixtures. In particular, these equations enable predictions concerning the temperature and pressure at which vapor liquid equilibrium occurs. These two educational JavaScript programs perform calculations using cubic equations of state and, equally importantly, explain how the calculations are performed.
Mathematics / Symbolic Mathematics |
Chemometrics |
Thermodynamics |
Equilibrium |
Enrichment / Review Materials
Connected Chemistry  Mike Stieff
Connected Chemistry, a novel learning environment for teaching chemistry, is appropriate for use in both high school and undergraduate chemistry classrooms. Connected Chemistry comprises several molecular simulations designed to enable instructors to teach chemistry using the perspective of emergent phenomena. That is, it allows students to see observed macro-level chemical phenomena, like many other scientific phenomena, as resultant from the interactions of many individual agents on a micro-level. This perspective is especially appropriate to the study of chemistry where the interactions between multitudes of molecules on the atomic level give rise to the macro-level concepts that students study in the classroom. Connected Chemistry comprises molecular simulations embedded in the NetLogo modeling software (1). The collection contains several predesigned simulations of closed chemical systems to teach specific chemistry concepts. Currently, Connected Chemistry contains models for teaching Brønsted Lowry acid base theory, enzyme kinetics, radical polymerization, buffer chemistry, kinetics, chemical equilibrium, and crystallization. Instructors and students can individually tailor the predesigned simulations or generate new simulations as they are needed in the context of a particular lesson, classroom, or department.
Acids / Bases |
Gases |
Kinetics |
Nuclear / Radiochemistry |
pH |
Titration / Volumetric Analysis |
Polymerization |
Equilibrium |
Catalysis
Introduction of Aquatic Chemistry in General Chemistry Curriculum;Spreadsheet Calculation Approaches  Chulsung Kim
Fundamental aquatic chemistry concepts may be introduced in general chemistry classes by computing ionization fractions and buffer intensity of aqueous phase carbonate systems. This Excel spreadsheet may used to build graphic presentations of a titration curve, distribution diagram, and buffer intensity as a function of pH. Accompanying activities are designed to enhance the concepts of acid-base equilibrium through exploring the relationship between pKa/pKb, pH of the solution, ionization fractions, and buffer intensity, and to exercise students graphing skills.
Acids / Bases |
Aqueous Solution Chemistry |
pH |
Titration / Volumetric Analysis |
Water / Water Chemistry |
Equilibrium
General Chemistry Multimedia Problems  David M. Whisnant
General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Acids / Bases |
Atomic Spectroscopy |
Calorimetry / Thermochemistry |
Isotopes |
Magnetic Properties |
Phases / Phase Transitions / Diagrams |
Surface Science |
Thermodynamics |
Equilibrium |
Oxidation / Reduction