TIGER

Videos: 108 results
Redox Titration and Animation  
Videos in this group show a redox titration and the molecular changes during the titration.
Aqueous Solution Chemistry |
Oxidation / Reduction |
Titration / Volumetric Analysis
Redox Titration and Animation  
A simple redox titration (hydrogen peroxide with permanganate) is performed. Also an animation demonstrates aspects of the stoichiometry.
Aqueous Solution Chemistry |
Oxidation / Reduction |
Titration / Volumetric Analysis
Weigh a Solid Sample (Procedures and Mistakes)  
Correctly and incorrectly performed steps in weighing a solid sample are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Phenolphthalein  
Animations show the color change due to phenolphthalein in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Bromophenol Blue  
Animations show the color change due to bromophenol blue in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Methyl Orange  
Animations show the color change due to methyl orange in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Bromthymol Blue  
Animations show the color change due to bromthymol blue in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Alizarin Yellow GG  
Animations show the color change due to alizarin yellow GG in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Crystal Violet  
Animations show the color change due to crystal violet in several acid-base titrations.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Titration Curves - Colors of Indicators - Animations  
These animations show how the indicator color in a titration flask changes as titrant is added.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Titration Techniques  
Techniques and concepts important in titrations are demonstrated and discussed.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Inspect and Adjust the Stopcock (Procedures and Mistakes)  
A stopcock should be inspected and adjusted if necessary. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Inspecting the Buret (Procedures and Mistakes)  
Students should carefully inspect a buret and stopcock before use. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Rinsing the Buret with Water (Procedures and Mistakes)  
Before use, a buret should be inspected, rinsed with distilled water, and washed if necessary. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Prepare the Buret (Procedures and Mistakes)  
The buret and stopcock must be inspected and the buret rinsed prior to use. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Obtaining Titrant (Procedures and Mistakes)  
Students should obtain the needed amount of titrant in a beaker that was first rinsed with titrant. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Rinsing the Buret with Titrant (Procedures and Mistakes)  
The buret walls and tip should be thoroughly rinsed with a small amount of titrant. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Filling the Buret With Titrant (Procedures and Mistakes)  
Alternate methods of filling a buret with and without a funnel are shown. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Adding the Indicator (Procedures and Mistakes)  
It is crucial that indicator be added to the sample to be titrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Prepare for Titration (Procedures and Mistakes)  
Steps illustrated include obtaining titrant, rinsing a buret, filling a buret, and adding indicator. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Viewing Meniscus At Eye Level  
Here is what the student would see if the meniscus were viewed from eye level.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Do Not View Meniscus From Above  
Here is what the student would see if the meniscus were viewed from above.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Do Not View Meniscus From Below  
Here is what the student would see if the meniscus were viewed from below.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Initial Buret Reading (Procedures and Mistakes)  
The meniscus should be viewed from eye level with a consistent background and recorded in the laboratory notebook. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Beginning the Titration (Procedures and Mistakes)  
Steps at the start of a titration are shown. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver Five Second Flow (Procedures and Mistakes)  
A five second flow of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver Long Squirt (Procedures and Mistakes)  
A long squirt (about 0.7 seconds) of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver Quick Squirt (Procedures and Mistakes)  
A quick squirt of titrant is delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver Quickly Flowing Drops (Procedures and Mistakes)  
Quickly flowing drops (about 2 per second) of titrant are delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver Slowly Flowing Drops (Procedures and Mistakes)  
Slow flowing drops of titrant are delivered and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Deliver One Drop (Procedures and Mistakes)  
One drop of titrant is delivered and two possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Touch off (Procedures and Mistakes)  
The last hanging drop of titrant is touched off and rinsed down and several possible results are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Wash Down Titrant (Procedures and Mistakes)  
The sides of the flask are rinsed to be sure all titrant delivered is in bottom of the flask and several possible results are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Delivering Titrant (Procedures and Mistakes)  
Several techniques for delivering titrant are demonstrated. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Final Buret Reading (Procedures and Mistakes)  
The meniscus should be read in the same manner as the initial reading. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Perform Titration (Procedures and Mistakes)  
The steps in a titration include reading and recording the initial volume, delivering titrant, observing the endpoint, and reading and recording the final buret volume. Both appropriate and inappropriate examples are included.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Titration (Procedures and Mistakes)  
Correctly and incorrectly performed steps in a titration are shown.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
A Complete Acid-Base Titration  
A solid acid is dissolved in deionized water and titrated with sodium hydroxide solution using the color change of an indictor to determine the endpoint.
Quantitative Analysis |
Titration / Volumetric Analysis |
Acids / Bases
Conductimetric Titration  
Aqueous sulfuric acid and barium hydroxide both conduct electricity; distilled water does not. As barium hydroxide solution is added to sulfuric acid, conductivity decreases until it reaches zero at the equivalence point. As excess barium hydroxide is added, the conductivity gradually increases.
Acids / Bases |
Conductivity |
Titration / Volumetric Analysis
Quantitative Acid-Base Titration  
An acid-base titration is demonstrated along with variations in technique for handling stopcocks.
Quantitative Analysis |
Titration / Volumetric Analysis |
Acids / Bases
Variations in Technique for Handling Stopcocks  
Three techniques for using stopcocks including right and left hand control are demonstrated.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Acid-Base Titrations and Animation  
Videos in this group show titrations of various acids with sodium hydroxide as well as molecular reactions during titration.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
Transferring a 25-Milliliter Sample  
A 25-milliliter volumetric pipet is used to remove a sample from a volumetric flask and transfer it to an Erlenmeyer flask.
Applications of Chemistry |
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Titration / Volumetric Analysis
Volumetric Pipet  
A volumetric pipet is used to transfer liquid samples of a known volume.
Laboratory Equipment / Apparatus |
Applications of Chemistry |
Quantitative Analysis |
Titration / Volumetric Analysis
Transferring a Liquid  
Quantitative transfer of a liquid with a Mohr pipet, a volumetric pipet, and a digital pipettor is demonstrated.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Applications of Chemistry |
Quantitative Analysis
Titration  
A large number of movies and images dealing with titration procedures and techniques are presented.
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Titration / Volumetric Analysis
Solutions  
Reactions and demonstrations exploring the concepts of solutions.
Noncovalent Interactions |
Physical Properties |
Precipitation / Solubility |
Solutions / Solvents |
Calorimetry / Thermochemistry |
Applications of Chemistry |
Acids / Bases |
Aqueous Solution Chemistry |
pH |
Conductivity |
Reactions |
Titration / Volumetric Analysis |
Liquids |
Solids |
Equilibrium |
Transport Properties
Exploding Soap Bubbles: Hydrogen + Oxygen  
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.
Reactions |
Oxidation / Reduction
Reaction, Microscale: Tin with Gold(III) Chloride  
A piece of metallic tin is carefully combined with a solution of gold(III) chloride under a microscope.
Oxidation / Reduction |
Reactions
Reaction, Microscale: Mercury With Silver Nitrate  
A droplet of mercury is carefully combined with a solution of silver nitrate under a microscope.
Oxidation / Reduction |
Reactions
Reactions, Microscale: Oxidation-Reduction  
Three oxidation-reduction reactions are shown under a microscope. They are silver with mercury chloride, aluminum with gold chloride, and tin with gold chloride.
Oxidation / Reduction |
Reactions
Reactions: Alkali Metals with Air  
Alkali Metals are shown reacting in air.
Descriptive Chemistry |
Oxidation / Reduction
Sucrose Dehydration gives Sulfur Dioxide  
Sulfuric acid dehydrates sucrose forming carbon.
Carbohydrates |
Oxidation / Reduction |
Reactions
Rapid Combustion of Peroxyacetone (Version 1)  
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.
Oxidation / Reduction |
Reactions
Explosive Combustion of Peroxyacetone (Version 2)  
In this demonstration, the peroxyacetone is tightly wrapped with an inserted thumbtack and ignited with an electric arc, resulting in an explosive detonation.
Oxidation / Reduction |
Reactions
Combustion of Peroxyacetone  
The combustion of peroxyacetone is demonstrated in two ways.
Oxidation / Reduction |
Reactions
Reaction: Potassium with Bromine  
A small piece of potassium is carefully added to liquid bromine, producing a violent reaction.
Oxidation / Reduction |
Reactions
Alkali Metals Reactions  
Reactions of alkali metals in air, water, acids, and bases.
Descriptive Chemistry |
Oxidation / Reduction
Chemical Properties of Sulfur Dioxide  
Reactions involving sulfur dioxide.
Gases |
Reactions |
Oxidation / Reduction
Iodine Clock Reaction  
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.
Kinetics |
Oxidation / Reduction
Reactions Under a Microscope  
Microscale redox and precipitation reactions.
Oxidation / Reduction |
Reactions |
Precipitation / Solubility
Reactions: Nonmetals with Air  
Various nonmetallic elements reacting with air are shown.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Oxidation-Reduction Reactions  
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.
Oxidation / Reduction |
Descriptive Chemistry |
Reactions
Reactions: Alkali Metals with Other Elements  
Alkali Metals are shown reacting with various elements.
Oxidation / Reduction |
Reactions |
Descriptive Chemistry
Reactions: Alkaline Earth Metals with Air  
Alkali earth metals are shown reacting in air.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions: Magnesium and Magnesium Compounds  
Videos in this group show chemical reactions of magnesium and of magnesium ions in solution.
Applications of Chemistry |
Oxidation / Reduction |
Reactions
Benedict's Test for Reducing Sugars  
Tests for glucose, sucrose, and fructose.
Carbohydrates |
Oxidation / Reduction |
Qualitative Analysis
Metals  
Samples of metals are ignited or heated over a flame, resulting in oxide formation.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Combustion of White Phosphorus  
Phosphorus combines with oxygen in a highly exothermic reaction.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions with Potassium  
Reactions involving potassium are demonstrated.
Oxidation / Reduction |
Reactions |
Descriptive Chemistry
Bromine  
Reactions and explosions involving bromine are demonstrated.
Calorimetry / Thermochemistry |
Oxidation / Reduction |
Reactions
Nitrogen Triiodide Detonation  
Simply touching dry nitrogen triiodide with a feather causes it to explode.
Calorimetry / Thermochemistry |
Oxidation / Reduction |
Reactions
Energy from Oxidation of Food (main)  
Food is added to liquid potassium chlorate, resulting in oxidation of the food.
Calorimetry / Thermochemistry |
Oxidation / Reduction |
Nutrition
Oxidation-Reduction Reactions  
Reactions or demonstrations exploring oxidation/reduction chemistry.
Reactions |
Oxidation / Reduction |
Descriptive Chemistry
Blue Bottle, Red and Blue Bottle  
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.
Kinetics |
Mechanisms of Reactions |
Oxidation / Reduction
Oxidation-Reduction Aqueous Solutions  
Oxidation-reduction reactions carried out in aqueous solution.
Oxidation / Reduction |
Aqueous Solution Chemistry
Halogen-Halide Redox Reactions  
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.
Oxidation / Reduction |
Aqueous Solution Chemistry
Reaction: Sodium with Acids  
Reaction of sodium with acid.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions: Nonmetals with Base   
Nonmetallic elements are shown reacting with bases.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions: Nonmetals with Acids  
Nonmetallic elements are shown reacting with acids.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Oscillating Reaction: Briggs-Rauscher  
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.
Kinetics |
Oxidation / Reduction |
Electrolytic / Galvanic Cells / Potentials
Reactions: Alkali Metals with Acids  
Alkali metals are shown reacting with acids.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions: Alkali Metals with Base  
Alkali Metals are shown reacting with base.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Reactions: Alkaline Earth Metals with Acids  
Alkali earth metals are shown reacting with acids.
Acids / Bases |
Descriptive Chemistry |
Oxidation / Reduction |
Reactions
Gas Producing  
Electrolysis of solutions with only gas(es) produced is shown.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction
Tin Compounds  
Electrolysis of tin(II) and tin(IV) solutions of different concentrations is shown.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction
Solid Producing  
Electrolysis of solutions in which a solid is produced is shown.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction
Electrolysis of Aqueous Solutions -- New  
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).
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction
Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.  
Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.
Alcohols |
Alkanes / Cycloalkanes |
Alkenes |
Oxidation / Reduction
Reactions: Acetylene  
Preparation of acetylene and the reaction of chlorine with acetylene are demonstrated. An antique carbide lamp is also demonstrated.
Alkynes |
Reactions |
Water / Water Chemistry |
Oxidation / Reduction
Energy from Oxidation of Food  
Food undergoes rapid oxidation when placed in molten potassium chlorate.
Calorimetry / Thermochemistry |
Kinetics |
Oxidation / Reduction |
Reactions |
Nutrition
Reactions with Sodium  
Reactions involving sodium are demonstrated.
Oxidation / Reduction |
Reactions |
Acids / Bases |
Descriptive Chemistry
TNT Detonation  
TNT is stable in the presence of shock, but can be detonated by adding a chemical priming agent.
Oxidation / Reduction |
Thermodynamics |
Aromatic Compounds |
Reactions
Decomposition Reactions  
Various examples of decomposition reactions are presented.
Oxidation / Reduction |
Reactions |
Aqueous Solution Chemistry
Oxidation of Glycerin by Potassium Permanganate  
Oxidation of glycerin (1,2,3-propanetriol) by potassium permanganate is demonstrated.
Alcohols |
Calorimetry / Thermochemistry |
Oxidation / Reduction |
Reactions
Formation of Carbon from Carbohydrate  
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).
Acids / Bases |
Carbohydrates |
Oxidation / Reduction |
Reactions
Orange Juice Clock  
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.
Electrolytic / Galvanic Cells / Potentials |
Oxidation / Reduction
Induction by Iron(II) of the Oxidation of Iodide by Dichromate  
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.
Catalysis |
Kinetics |
Mechanisms of Reactions |
Oxidation / Reduction
Reactions: Nonmetals with Water  
Nonmetallic elements are shown reacting with water.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions |
Water / Water Chemistry
Reactions: Alkaline Earth Metals with Water  
Alkali earth metals are shown reacting in water.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions |
Water / Water Chemistry
Reactions: Alkali Metals with Water  
Alkali Metals are shown reacting in water.
Descriptive Chemistry |
Oxidation / Reduction |
Reactions |
Water / Water Chemistry |
Acids / Bases
HCl, NaOH, NaCl and Water  
Electrolysis of HCl, NaOH and NaCl solutions and of water is shown.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction |
Water / Water Chemistry
Electrochemical Series: Metal Trees  
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.
Aqueous Solution Chemistry |
Oxidation / Reduction |
Electrolytic / Galvanic Cells / Potentials |
Electrochemistry
Pulsating Electrochemical Reaction: Mercury Beating Heart  
A drop of mercury in a watch glass is covered with a solution of potassium chromate in concentrated sulfuric acid. An iron nail is positioned so that it nearly touches the mercury. Eventually, the mercury drop starts to beat rhythmically, like a beating heart.
Electrolytic / Galvanic Cells / Potentials |
Oxidation / Reduction |
Reactions |
Surface Science
Acid Base Reactions of Sulfur Dioxide  
Acid base reactions involving sulfur dioxide are shown.
Acids / Bases |
Gases |
Reactions |
Oxidation / Reduction |
Precipitation / Solubility |
Descriptive Chemistry |
Applications of Chemistry
Reactions of Sulfuric Acid  
Reactions of materials reacting with sulfuric acid are shown.
Acids / Bases |
Oxidation / Reduction |
Reactions |
Descriptive Chemistry |
Aqueous Solution Chemistry |
Precipitation / Solubility
Oxidation-Reduction (Redox) Reactions  
Demonstrations exploring oxidation/reduction chemistry.
Aqueous Solution Chemistry |
Electrochemistry |
Oxidation / Reduction |
Water / Water Chemistry |
Acids / Bases |
pH |
Conductivity |
Reactions |
Applications of Chemistry |
Descriptive Chemistry |
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
Enthlapy-Thermodynamics  
Reactions and demonstrations the explore thermodynamic concepts.
Precipitation / Solubility |
Solutions / Solvents |
Calorimetry / Thermochemistry |
Applications of Chemistry |
Acids / Bases |
Physical Properties |
Reactions |
Thermodynamics |
Gases |
Phases / Phase Transitions / Diagrams |
Water / Water Chemistry |
Liquids |
Solids |
pH |
Consumer Chemistry |
Kinetics |
Oxidation / Reduction