108 Results
Corrosion   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Substances Which Are Both Oxidizing and Reducing Agents   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Common Reducing Agents   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Electrolysis   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Redox Couples   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Common Oxidizing Agents   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Balancing Redox Equations   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Redox Reactions   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Oxidation-Reduction Aqueous Solutions   
(Movie/Animation, Audio/Visual (8))
Oxidation-reduction reactions carried out in aqueous solution.
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.
Reactions with Potassium   
(Movie/Animation, Audio/Visual (7))
Reactions involving potassium are demonstrated.
Explosive Combustion of Peroxyacetone (Version 2)   
(Movie/Animation, Audio/Visual (7))
In this demonstration, the peroxyacetone is tightly wrapped with an inserted thumbtack and ignited with an electric arc, resulting in an explosive detonation.
Decomposition Reactions   
(Movie/Animation, Audio/Visual (6))
Various examples of decomposition reactions are presented.
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.
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.
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.
Exploding Soap Bubbles: Hydrogen + Oxygen   
(Movie/Animation, Audio/Visual (6))
Explosions of bubbles filled with only hydrogen and with varying ratios of hydrogen and oxygen are demonstrated.
Exploding Soap Bubbles: Hydrogen + Oxygen   
(Movie/Animation, Audio/Visual (6))
Explosions of bubbles filled with only hydrogen and with varying amounts of hydrogen and oxygen are demonstrated.
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.
Solid Producing   
(Movie/Animation, Audio/Visual (6), Movie/Animation (1))
Electrolysis of solutions in which a solid is produced is shown.
Gas Producing   
(Movie/Animation, Audio/Visual (6), Movie/Animation (1))
Electrolysis of solutions with only gas(es) produced is shown.
Oxidation-Reduction (Redox) Reactions   
(Movie/Animation, Audio/Visual (5))
Demonstrations exploring oxidation/reduction chemistry.
Reactions: Alkali Metals with Water   
(Movie/Animation, Audio/Visual (5))
Alkali Metals are shown reacting in water.
Reactions: Nonmetals with Air   
(Movie/Animation, Audio/Visual (5))
Various nonmetallic elements reacting with air are shown.
Reactions: Alkali Metals with Air   
(Movie/Animation, Audio/Visual (5))
Alkali Metals are shown reacting in air.
Alkali Metals Reactions   
(Movie/Animation, Audio/Visual (5))
Reactions of alkali metals in air, water, acids, and bases.
Benedict's Test for Reducing Sugars   
(Movie/Animation, Audio/Visual (5))
Tests for glucose, sucrose, and fructose.
Reactions: Magnesium and Magnesium Compounds   
(Movie/Animation, Audio/Visual (5))
Videos in this group show chemical reactions of magnesium and of magnesium ions in solution.
Electrolysis   
(Movie/Animation, Audio/Visual (4))
Various examples of electrolysis are presented.
Reactions of Sulfuric Acid   
(Movie/Animation, Audio/Visual (4))
Reactions of materials reacting with sulfuric acid are shown.
Reactions: Alkaline Earth Metals with Acids   
(Movie/Animation, Audio/Visual (4))
Alkali earth metals are shown reacting with acids.
Reactions: Alkaline Earth Metals with Air   
(Movie/Animation, Audio/Visual (4))
Alkali earth metals are shown reacting in air.
Reactions: Alkali Metals with Other Elements   
(Movie/Animation, Audio/Visual (4))
Alkali Metals are shown reacting with various elements.
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).
Energy from Oxidation of Food   
(Movie/Animation, Audio/Visual (4))
Food undergoes rapid oxidation when placed in molten potassium chlorate.
Metals   
(Movie/Animation, Audio/Visual (4))
Samples of metals are ignited or heated over a flame, resulting in oxide formation.
Chemical Properties of Sulfur Dioxide   
(Movie/Animation, Audio/Visual (4))
Reactions involving sulfur dioxide.
HCl, NaOH, NaCl and Water   
(Movie/Animation, Audio/Visual (4))
Electrolysis of HCl, NaOH and NaCl solutions and of water is shown.
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.
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).
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.
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.
Acid Base Reactions of Sulfur Dioxide   
(Movie/Animation, Audio/Visual (3))
Acid base reactions involving sulfur dioxide are shown.
Reactions: Alkaline Earth Metals with Water   
(Movie/Animation, Audio/Visual (3))
Alkali earth metals are shown reacting in water.
Reactions: Alkali Metals with Base   
(Movie/Animation, Audio/Visual (3))
Alkali Metals are shown reacting with base.
Reactions: Alkali Metals with Acids   
(Movie/Animation, Audio/Visual (3))
Alkali metals are shown reacting with acids.
Reactions: Nonmetals with Base    
(Movie/Animation, Audio/Visual (3))
Nonmetallic elements are shown reacting with bases.
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.
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.
Energy from Oxidation of Food (main)   
(Movie/Animation, Audio/Visual (3))
Food is added to liquid potassium chlorate, resulting in oxidation of the food.
Combustion of White Phosphorus   
(Movie/Animation, Audio/Visual (3))
Phosphorus combines with oxygen in a highly exothermic reaction.
Reactions Under a Microscope   
(Movie/Animation, Audio/Visual (2))
Microscale redox and precipitation reactions.
Reactions: Nonmetals with Acids   
(Movie/Animation, Audio/Visual (2))
Nonmetallic elements are shown reacting with acids.
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.
Induction by Iron(II) of the Oxidation of Iodide by Dichromate   
(Movie/Animation, Audio/Visual (2))
Acidic aqueous solutions containing dichromate and iodide ions are mixed with no reaction. The addition of a solution of iron(II) ion induces the rapid formation of brown triiodide ion.
Reactions with Sodium   
(Movie/Animation, Audio/Visual (2))
Reactions involving sodium are demonstrated.
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.
Bromine   
(Movie/Animation, Audio/Visual (2))
Reactions and explosions involving bromine are demonstrated.
Reaction: Potassium with Bromine   
(Movie/Animation, Audio/Visual (2))
A small piece of potassium is carefully added to liquid bromine, producing a violent reaction.
Combustion of Peroxyacetone   
(Movie/Animation, Audio/Visual (2))
The combustion of peroxyacetone is demonstrated in two ways.
Sucrose Dehydration gives Sulfur Dioxide   
(Movie/Animation, Audio/Visual (2))
Sulfuric acid dehydrates sucrose forming carbon.
Redox Titration and Animation   
(Movie/Animation, Audio/Visual (2))
Videos in this group show a redox titration and the molecular changes during the titration.
Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.   
(Movie/Animation, Audio/Visual (2))
Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.
Tin Compounds   
(Movie/Animation, Audio/Visual (2))
Electrolysis of tin(II) and tin(IV) solutions of different concentrations is shown.
Reaction, Microscale: Mercury With Silver Nitrate   
(Movie/Animation, Audio/Visual (2))
A droplet of mercury is carefully combined with a solution of silver nitrate under a microscope.
Reaction, Microscale: Tin with Gold(III) Chloride   
(Movie/Animation, Audio/Visual (2))
A piece of metallic tin is carefully combined with a solution of gold(III) chloride under a microscope.
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.
Oxidation-Reduction Reactions   
(Movie/Animation, Audio/Visual (11))
Reactions or demonstrations exploring oxidation/reduction chemistry.
Enthlapy-Thermodynamics   
(Movie/Animation, Audio/Visual (10))
Reactions and demonstrations the explore thermodynamic concepts.
Reactions: Nonmetals with Water   
(Movie/Animation, Audio/Visual (1))
Nonmetallic elements are shown reacting with water.
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.
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.
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.
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.

Electrochemistry : FuelCellsAndBatteries (20 Variations)   
(Assessment Material (1))
Determine whether the following descriptions are characteristic of fuel cells, primary batteries, secondary batteries or both batteries and fuel cells.
Electrochemistry : ElectrolysisCalcs (20 Variations)   
(Assessment Material (1))
Calculate the mass of gold that could be plated from a solution with a current of 0.40 A for 22 min.

Au3+(aq) + 3 electrons Arrow Au(s)

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?

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) Arrow Zn2+(aq) + 2e-
2NH4+(aq) + 2e- Arrow 2NH3(g) + H2(g)

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.)

Electrochemistry : IDRedOxAgents (20 Variations)   
(Assessment Material (1))
In the following balanced reaction, identify the oxidizing and reducing agents.

Fe + Fe2(SO3)3 Arrow 3FeSO3

Electrochemistry : IDHalfRxns (20 Variations)   
(Assessment Material (1))
What are the half-reactions for the reaction of Cs and Cl2 in the formation of CsCl2?

Cs + Cl2 Arrow CsCl2

Electrochemistry : CalcInterpretEo (20 Variations)   
(Assessment Material (1))
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)

Reactions : NotRedoxRxn (4 Variations)   
(Assessment Material (1))
Which of the following is a NOT a redox reaction?
Reactions : RedoxAgents (10 Variations)   
(Assessment Material (1))
Identify each of the following as a reducing agent or an oxidizing agent.
Organic : AlcoholOxidation (10 Variations)   
(Assessment Material (1))
Which of the following alcohols will be oxidized by potassium permanganate to form a ketone?
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).

Electrochemistry : GeneralElectrochem (20 Variations)   
(Assessment Material (1))
Which of the following statements is not correct?
Electrochemistry : GeneralCorrosion (10 Variations)   
(Assessment Material (1))
Which of the following statements not is true?
Electrochemistry : CalcStandRedPotential (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Calculate Eo for the following balanced reaction.

Fe(s) + Fe2(SO3)3(s) Arrow 3FeSO3(s)

Electrochemistry : CalcDeltaGfromE (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Calculate the dGo for the oxidation of 2 mole of silver in the following balanced reaction.

2Ag(s) + CaI2(aq) a Ca(s) + 2AgI(s)

Oxidation Reduction (21 Variations)   
()
A collection of 21 assessment questions about Oxidation Reduction
Amines (30 Variations)   
()
A collection of 30 assessment questions about Amines
Alcohols and Ethers (22 Variations)   
()
A collection of 22 assessment questions about Alcohols and Ethers
Carboxylic Acids (14 Variations)   
()
A collection of 14 assessment questions about Carboxylic Acids
Aromatic (26 Variations)   
()
A collection of 26 assessment questions about Aromatic
Alkenes and Alkynes (31 Variations)   
()
A collection of 31 assessment questions about Alkenes and Alkynes
Synthesis (11 Variations)   
()
A collection of 11 assessment questions about Synthesis
Epoxides (5 Variations)   
()
A collection of 5 assessment questions about Epoxides
IR (6 Variations)   
()
A collection of 6 assessment questions about IR
Esters (8 Variations)   
()
A collection of 8 assessment questions about Esters
Carbohydrates (17 Variations)   
()
A collection of 17 assessment questions about Carbohydrates
Oxidation Reduction Reactions (2 Variations)   
()
A collection of 2 assessment questions about Oxidation Reduction Reactions
Acetals (9 Variations)   
()
A collection of 9 assessment questions about Acetals
Nitriles (1 Variations)   
()
A collection of 1 assessment questions about Nitriles
Amides (1 Variations)   
()
A collection of 1 assessment questions about Amides
Imines (8 Variations)   
()
A collection of 8 assessment questions about Imines
Corrosion in Astronomy   
()
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
A Greener Bleach   
()
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.