| 108 Results |
| Corrosion (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Common Reducing Agents (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Electrolysis (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Redox Couples (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Common Oxidizing Agents (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Balancing Redox Equations (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| Redox Reactions (Other (1)) |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| TNT Detonation (Movie/Animation, Audio/Visual (7)) |
| TNT is stable in the presence of shock, but can be detonated by adding a chemical priming agent. |
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| Decomposition Reactions (Movie/Animation, Audio/Visual (6)) |
| Various examples of decomposition reactions are presented. |
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| Halogen-Halide Redox Reactions (Movie/Animation, Audio/Visual (6)) |
| An aqueous solution of a halogen (Cl2, Br2 or I2) is poured into an aqueous halide solution (Cl-, Br- or I-) covered with a layer of hexane. |
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| Iodine Clock Reaction (Movie/Animation, Audio/Visual (6)) |
| A solution of hydrogen peroxide and sulfuric acid is added to a solution containing iodide ion, thiosulfate ion, and starch. After some time the dark blue color of a triiodide-starch complex is observed. The influences of initial reactant concentrations on the reaction time are examined, as are the influence of volume and temperature. |
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| Rapid Combustion of Peroxyacetone (Version 1) (Movie/Animation, Audio/Visual (6)) |
| In this demonstration, the peroxyacetone is piled loosely onto an iron surface and ignited with an electric arc, resulting in a ball of flame and a muffled report. |
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| Exploding Soap Bubbles: Hydrogen + Oxygen (Movie/Animation, Audio/Visual (6)) |
| A series of three videos shows that as the ratio of oxygen to hydrogen in soap bubbles increases, the explosions that occur when the bubbles are ignited get louder. (The fact that with an excess of oxygen the explosions would become softer again is not shown.) Each video is repeated with no voice-over so that only the sounds of the explosions are heard. Five still images are provided to show the stoichiometry on the molecular scale. The videos are intended to be shown in order beginning with Hydrogen Alone and ending with hydrogen plus more oxygen. |
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| Solid Producing (Movie/Animation, Audio/Visual (6), Movie/Animation (1)) |
| Electrolysis of solutions in which a solid is produced is shown. |
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| Gas Producing (Movie/Animation, Audio/Visual (6), Movie/Animation (1)) |
| Electrolysis of solutions with only gas(es) produced is shown. |
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| Alkali Metals Reactions (Movie/Animation, Audio/Visual (5)) |
| Reactions of alkali metals in air, water, acids, and bases. |
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| Electrolysis (Movie/Animation, Audio/Visual (4)) |
| Various examples of electrolysis are presented. |
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| Formation of Carbon from Carbohydrate (Movie/Animation, Audio/Visual (4)) |
| Sulfuric acid has a very high affinity for water. It is shown to dehydrate a carbohydrate (sucrose) forming carbon. Sulfuric acid is reduced to sulfur dioxide, which bleaches a rose petal.
In a second experiment, the sulfur dioxide reduces purple permanganate to nearly colorless manganese(II). |
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| Metals (Movie/Animation, Audio/Visual (4)) |
| Samples of metals are ignited or heated over a flame, resulting in oxide formation. |
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| HCl, NaOH, NaCl and Water (Movie/Animation, Audio/Visual (4)) |
| Electrolysis of HCl, NaOH and NaCl solutions and of water is shown. |
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| Reactions: Acetylene (Movie/Animation, Audio/Visual (4)) |
| Preparation of acetylene and the reaction of chlorine with acetylene are demonstrated. An antique carbide lamp is also demonstrated. |
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| Electrolysis of Aqueous Solutions -- New (Movie/Animation, Audio/Visual (4)) |
| This is a revised version of the previously published Electrolysis of Aqueous Solutions, providing corrections and additional images. In order to understand most of these videos it is important to either see the Complete Experiment: Electrolysis of an Aqueous Solution video or to be able to read a description of that video (such as the one in the Discussion section for that video). |
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| Oxidation-Reduction Reactions (Movie/Animation, Audio/Visual (4)) |
| Electrolysis reactions and the action of nitric acid on iron and copper illustrate the concepts of oxidation and reduction. Also three oxidation-reduction reactions are shown under a microscope. |
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| Reactions, Microscale: Oxidation-Reduction (Movie/Animation, Audio/Visual (4)) |
| Three oxidation-reduction reactions are shown under a microscope. They are silver with mercury chloride, aluminum with gold chloride, and tin with gold chloride. |
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| Orange Juice Clock (Movie/Animation, Audio/Visual (3)) |
| In this demonstration a galvanic cell is made from the combination of a magnesium strip, a copper strip, and juice in a beaker. The current from this cell is used to drive a clock normally powered by a DC battery. |
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| Oscillating Reaction: Briggs-Rauscher (Movie/Animation, Audio/Visual (3)) |
| When a solution of malonic acid, starch, and manganese(II) ion is added to a solution of hydrogen peroxide, iodate ion, and sulfuric acid, gas bubbles form and the color of the resulting mixture oscillates periodically from colorless to amber to blue. |
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| Redox Titration and Animation (Movie/Animation, Audio/Visual (2)) |
| A simple redox titration (hydrogen peroxide with permanganate) is performed. Also an animation demonstrates aspects of the stoichiometry. |
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| Blue Bottle, Red and Blue Bottle (Movie/Animation, Audio/Visual (2)) |
| Color changes are caused by reactions of oxygen in the air with chemicals in a solution. The colors fade over time, but can be regenerated by shaking the flask containing the solution. |
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| Bromine (Movie/Animation, Audio/Visual (2)) |
| Reactions and explosions involving bromine are demonstrated. |
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| Reaction: Potassium with Bromine (Movie/Animation, Audio/Visual (2)) |
| A small piece of potassium is carefully added to liquid bromine, producing a violent reaction. |
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| Redox Titration and Animation (Movie/Animation, Audio/Visual (2)) |
| Videos in this group show a redox titration and the molecular changes during the titration. |
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| Tin Compounds (Movie/Animation, Audio/Visual (2)) |
| Electrolysis of tin(II) and tin(IV) solutions of different concentrations is shown. |
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| Electrochemical Series: Metal Trees (Movie/Animation, Audio/Visual (11)) |
| A piece of metal (Cu, Zn, Ag, Cd, or Pb) is placed in an aqueous solution of a metal ion (Cu2+, Zn2+, Ag+, Cd2+, or Pb2+). In some cases the growth of metal crystals indicates that a chemical reaction has occurred. |
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| Enthlapy-Thermodynamics (Movie/Animation, Audio/Visual (10)) |
| Reactions and demonstrations the explore thermodynamic concepts. |
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| Halogens and Halides (GCMP) (Interactive Simulation, Software (1)) |
| Halogens and Halides: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will study the oxidation-reduction reactions between the halogens and the halide ions. The halogens and halides will be dissolved in water and hexane. 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. |
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| Chromate-Dichromate (GCMP) (Interactive Simulation, Software (1)) |
| Chromate/Dichromate: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will study shifts in the equilibrium between chromate and dichromate. 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. |
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| Electrochemistry : BatteryDesign (8 Variations) (Assessment Material (1)) |
| Students are attempting to construct a battery in the laboratory that will light up a light bulb. Compare the following lists prepared by students and determine which student will not be able to successfully build a "battery" that will light up the bulb. |
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| Electrochemistry : BalanceRedoxRxn (20 Variations) (Assessment Material (1)) |
| The following electrochemical data may be helpful in answering the question below.
Magnesium reacts with nitric acid to form magnesium nitrate and nitrogen monoxide in an acidic aqueous solution. Write the balanced equation for this reaction. |
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| Electrochemistry : ECellObservations (20 Variations) (Assessment Material (1)) |
Consider the electrochemical cell diagram shown below. As you observe the reaction in the cell, you notice that the tin electrode seems to be disappearing while there are deposits forming on the silver electrode. Which of the following is a correct statement?
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| Electrochemistry : BatteryHalfRxns (20 Variations) (Assessment Material (1)) |
| The two half-reactions for the LeClanche dry cell battery are shown below. Identify the oxidizing and reducing agents in this cell. Zn(s)  Zn2+(aq) + 2e-
2NH4+(aq) + 2e- 2NH3(g) + H2(g) |
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| Electrochemistry : ElectrolysisHalfRxns (20 Variations) (Assessment Material (1)) |
| The following electrochemical data may be helpful in answering the question below.
What will be the products of the electrolysis of an aqueous solution of Tin (II) sulfate (SnSO4)? (The electrodes themselves are platinum.) |
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| Electrochemistry : CalcInterpretEo (20 Variations) (Assessment Material (1)) |
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The following electrochemical data may be helpful in answering the question below.
Consider a cell composed of the following half-reactions. Determine the
magnitude of E° for the cell and decide whether the reaction will be
product-favored or reactant-favored as written.
Cr(s) Cr3+(aq) + 3e-
Ce4+(aq) + e- Ce3+(aq) |
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| Electrochemistry : SacrificialAnode (10 Variations) (Assessment Material (1)) |
| The following electrochemical data may be helpful in answering the question below.
One method for protecting metals against corrosion is to connect the metal directly to a "sacrificial anode". This is the method used to protect pipelines and ships hulls. Which of the following metals would you consider the best candidate for a sacrificial anode for a ship's hull? The hull is steel (which is mostly iron). |
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| Electrochemistry : CalcDeltaGfromE (20 Variations) (Assessment Material (1)) |
| The following electrochemical data may be helpful in answering the question below.
Calculate the  Go for the oxidation of 2 mole of silver in the following balanced reaction. 2Ag(s) + CaI2(aq) Ca(s) + 2AgI(s) |
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| Corrosion in Astronomy () |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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| A Greener Bleach () |
| A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook. |
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