| Other Resources: 52 results |
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
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Ionization of Water Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Water / Water Chemistry
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Ionization of Water in Foods Sofia Erazo
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Water / Water Chemistry
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Hydrogen and Hydroxide Ions Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry |
Water / Water Chemistry
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Ice and Water Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Water / Water Chemistry
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Drinking Bird (GCMP) David M. Whisnant
Drinking Bird: this is a resource in the collection "General Chemistry Multimedia Problems". The drinking bird's felt-covered head dips into the beaker of water as it bobs up and down. The tube goes from the bottom of the body to its head. 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.
Water / Water Chemistry
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Electrolisis 1 (GCMP) David M. Whisnant
Electrolisis of Water #1: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. 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.
Electrochemistry |
Water / Water Chemistry
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Electrolisis 2 (GCMP) David M. Whisnant
Electrolisis of Water #2: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. 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.
Electrochemistry |
Water / Water Chemistry
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Electrolisis 3 (GCMP) David M. Whisnant
Electrolisis of Water #3: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. 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.
Electrochemistry |
Water / Water Chemistry
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Water #1 (GCMP) David M. Whisnant
Water #1: this is a resource in the collection "General Chemistry Multimedia Problems". Isotopes are forms of the same element composed of atoms that have different numbers of neutrons. In this problem we will begin by observing the properties of water containing two isotopes of hydrogen. 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.
Water / Water Chemistry
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Water #2 (GCMP) David M. Whisnant
Water #2: this is a resource in the collection "General Chemistry Multimedia Problems". Isotopes are forms of the same element composed of atoms that have different numbers of neutrons. In this problem we will begin by observing the properties of water containing two isotopes of hydrogen. 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.
Water / Water Chemistry
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Water and Its Elements
Volume 03, issue 02 of a series of leaflets covering subjects of interest to students of elementary chemistry distributed in 1929 - 1932.
Water / Water Chemistry |
Geochemistry
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Hydrogen, Oxygen, and Their Compounds
Volume 04, issue 01 of a series of leaflets covering subjects of interest to students of elementary chemistry distributed in 1929 - 1932.
Water / Water Chemistry
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Water and Its Elements
Volume 05, issue 01 of a series of leaflets covering subjects of interest to students of elementary chemistry distributed in 1929 - 1932.
Water / Water Chemistry
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What Chemists Do in Geology David Carter
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Geochemistry |
Water / Water Chemistry
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Ice and Water in Sports, Physiology & Health-Home Run Distance and Humidity Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Water / Water Chemistry
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Why are Air Conditioners Rated in Tons of Cooling Capacity Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Thermodynamics |
Water / Water Chemistry
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Water-Solids, Liquids & Gases American Chemical Society
ACS Science for Kids activities explore the properties of water.
Water / Water Chemistry
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Land-Science for Kids American Chemical Society
ACS Science for Kids activities explore the geological process that occur on earth in relation to chemical properties.
Water / Water Chemistry |
Geochemistry
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Water-ACS Science for Kids American Chemical Society
ACS Science for Kids activities explore chemistry involving water.
Water / Water Chemistry
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Dilution in Mixing Zones Jnelson1
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents |
Water / Water Chemistry
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Miscibility with Cultural Connections Garrett Schwarzman
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Noncovalent Interactions |
Water / Water Chemistry
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Arsenic in Well Water David Carter
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Descriptive Chemistry |
Water / Water Chemistry
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Substances Which Are Both Oxidizing and Reducing Agents Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Oxidation / Reduction |
Water / Water Chemistry
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Dissolving American Chemical Society
ACS Science for Kids activities exploring the process of dissolving chemicals in solution.
Water / Water Chemistry |
Solutions / Solvents
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Bubbles-Solids, Liquids & Gases
ACS Science for Kids activities explore the properties of gases and how these properties explain the formation of bubbles.
Water / Water Chemistry |
Lipids |
Gases
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Steam (GCMP) David M. Whisnant
Steam: this is a resource in the collection "General Chemistry Multimedia Problems". We observe two videos of steam produced by boiling water. The steam is channeled through a copper coil which will be heated. 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.
Water / Water Chemistry |
Phases / Phase Transitions / Diagrams
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Molecular Model of Zincon William F. Coleman
The Featured Molecules this month are the tautomeric forms of the colorimetric reagent zincon, used in the paper by Maria Mar Areco, Maria dos Santos Afonso, and Erika Valdman on the bioabsorption of zinc, and by extension other metal ions, by seaweed. The structures presented have been calculated at the DFT/6-31G(d) level using the B3LYP functional. These structures represent energy minima, but not necessarily global minima. The structures could be used as an introduction to the concept of tautomerism, with students being asked to develop a definition of the term based on their observations of the difference(s) in linkage in the two forms. An intramolecular hydrogen bond is found in each structure, and introductory chemistry students could be encouraged to look for these structural features in molecules that are more complex than those typically encountered to introduce hydrogen bonding. More advanced students could use computational techniques to explore the energy differences between the two forms, and compare those differences to the ones observed between more traditional keto/enol examples.
Calorimetry / Thermochemistry |
Water / Water Chemistry |
Biological Cells
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Protecting Citrus Trees from Freezing with Freezing Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Thermodynamics |
Water / Water Chemistry |
Agricultural Chemistry
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Number of Atoms in a drop of Water; Moles Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Nomenclature / Units / Symbols |
Water / Water Chemistry
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Water; Foundation for Life Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Atomic Properties / Structure |
Water / Water Chemistry
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Ice, water, vapor Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Molecular Properties / Structure |
Water / Water Chemistry
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Molecular Model for Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Atomic Properties / Structure |
Water / Water Chemistry
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Modeling the Formation of Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Molecular Properties / Structure |
Water / Water Chemistry
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Atomic Weights and Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Atomic Properties / Structure |
Water / Water Chemistry
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Moles; the Number of Water molecules Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Nomenclature / Units / Symbols |
Water / Water Chemistry
|
Amount of Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Nomenclature / Units / Symbols |
Water / Water Chemistry
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Using the Molar Mass of Water Ed Vitz
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Atomic Properties / Structure |
Water / Water Chemistry
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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
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Molecular Models of EDTA and Other Chelating Agents William F. Coleman
Deirdre Bell-Oudry presents a variation on an old theme in her paper on using an indirect EDTA titration for sulfate analysis (1). EDTA and (often loosely) related species are this month's Featured Molecules.EDTA is a hexaprotic acid (H6Y2+) having the pKa values given in the featured paper (1). Figure 1 shows a distribution diagram for the EDTA system (2). At the pH of normal waters, the predominant species have one or both of the nitrogen atoms protonated.Complexation, however, requires that both nitrogens be deprotonated and it is generally assumed that the form that complexes with metal ions is Y4−. Structures of several forms of EDTA are included in the molecule collection (Figure 2). These structures are quite flexible having many conformations that are readily accessible at room temperature.An introduction to EDTA chemistry leads to broader questions of metal ion chelation or sequestration. Related chelating agents included in the molecule collection are EGTA, DCTA, NTA, BAPTA, and DTPA. Molecular dynamics and Hartree-Fock calculations on BAPTA (Figure 2) confirm that many conformations, ranging from those with the phenyl rings parallel to one another, to more elongated forms, are essentially isoenergetic in room temperature aqueous solution (3).Also included in the molecule collection are several crown ethers, an isophore (nonactin), and a cryptand. These not only provide students with a glimpse of the types of molecules being employed for metal ion sequestration but open a wide range of topics of current research in a variety of areas of inorganic, industrial, environmental, and biological chemistry.
Aqueous Solution Chemistry
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Hydration of Ions Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry
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Conjugate Acid-Base Pairs and pH Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry
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Ammonia (GCMP) David M. Whisnant
Ammonia fountain: this is a resource in the collection "General Chemistry Multimedia Problems". In an ammonia fountain, a flask is filled with ammonia gas. A tube from the flask extends into a pan of water that contains phenolphthalein. When a rubber bulb full of water is squeezed, the water squirts into the flask. Water from the pan then is pushed into the flask and the indicator changes color. 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 |
Aqueous Solution Chemistry
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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
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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
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Buffer Solutions Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Acids / Bases |
Aqueous Solution Chemistry
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Marie Maynard Daly Barbara A. Burke
This short biographical "snapshot" provides basic information about the person's chemical work, gender, ethnicity, and cultural background. A list of references is given along with additional WWW sites to further your exploration into the life and work of this chemist.
Minorities in Chemistry |
Water / Water Chemistry |
Enrichment / Review Materials
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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
|
Planet Earth American Chemical Society
ACS Science for Kids activities and tests exploring applications of chemistry on Earth.
Atmospheric Chemistry |
Applications of Chemistry |
Water / Water Chemistry |
Geochemistry |
Plant Chemistry
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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
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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
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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
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