| Videos: 50 results |
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
|
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
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Reactions, Microscale: Precipitation
Here we show two precipitation reactions under a microscope. They are potassium dichromate crystal with silver nitrate and potassium iodide with lead nitrate.
Precipitation / Solubility |
Reactions
|
Reaction, Microscale: Potassium Dichromate with Silver Nitrate
A crystal of potassium dichromate is carefully combined with a solution of silver nitrate under a microscope. The reaction takes some time, so it is shown in a series of seven sequential videos. To see the entire reaction you need to play all seven.
Precipitation / Solubility |
Reactions
|
Orange Tornado: Precipitation of Mercury(II) Iodide - Version 1
When mercury(II) nitrate and potassium iodide are combined with rapid stirring, an orange tornado of mercury(II) iodide is formed.
Equilibrium |
Precipitation / Solubility |
Reactions
|
Orange Tornado: Precipitation of Mercury(II) Iodide - Version 2
When mercury(II) nitrate and potassium iodide are combined with rapid stirring, an orange tornado of mercury(II) iodide is formed.
Equilibrium |
Precipitation / Solubility |
Reactions
|
Extraction of Acid with Base
Water and diethyl ether are shaken in a separatory funnel with a small amount of red indophenol. The non-ionic indophenol remains in the ether layer, coloring it red. Addition of sodium hydroxide converts the indophenol to its blue ionic acid anion which is extracted into the water layer turning it blue.
Acids / Bases |
Precipitation / Solubility
|
Reactions Under a Microscope
Microscale redox and precipitation reactions.
Oxidation / Reduction |
Reactions |
Precipitation / Solubility
|
Reactions of Sulfurous Acid
These demonstrations illustrate the production and effects of sulfur dioxide, a pollutant generated by the burning of sulfur impurities in coal. The sulfurous acid produced by dissolving sulfur dioxide in water is allowed to react with various forms of calcium carbonate found in nature, namely marble, limestone, chalk, and eggshell.
Acids / Bases |
Precipitation / Solubility |
Reactions
|
Reactions of Nitric Acid
These demonstrations illustrate the production of nitric acid and its reaction with various forms of calcium carbonate found in nature, namely marble, limestone, chalk, and eggshell.
Acids / Bases |
Precipitation / Solubility |
Reactions
|
Aqueous Reactions: Silver Nitrate
Reactions with the addition of ions in solution to aqueous silver nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Cadmium Nitrate
Reactions between various solutions and aqueous Cadmium Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Cobalt(II) Chloride
Reactions of solutions with aqueous Cobalt(II) Chloride.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Chromium(III) Chloride
Reactions of solutions in aqueous Chromium (III) Chloride.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Copper(II) Nitrate
Reactions of solutions with aqueous Copper (II) Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Copper(II) Sulfate
Reactions of solutions with aqueous Copper (II) Sulfate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Iron(II) Ion
Reactions of solutions with aqueous Iron(II) Ion.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Iron(III) Ion
Reactions of solutions with aqueous Iron (III) Ions.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Sulfuric Acid
Reactions of solutions with aqueous Sulfuric Acid.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Hydrochloric Acid
Reactions of solutions with aqueous Hydrochloric Acid.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Mercury(II) Ion
Reactions of solutions with aqueous Mercury (II) Ions.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Mercury(I) Nitrate
Reactions of solutions with aqueous Mercury (I) Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Manganese (II) Chloride
Reactions of solutions with Manganese (II) Chloride.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Sodium Chloride
Reactions of solutions with aqueous Sodium Chloride.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Sodium Carbonate
Reactions of solutions with aqueous Sodium Carbonate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Sodium Hydroxide
Reactions of solutions with aqueous Sodium Hydroxide.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Nickel(II) Nitrate f
Reactions of solutions with aqueous Nickel (II) Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Lead(II) Nitrate
Reactions of solutions with aqueous Lead (II) Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Strontium Chloride
Reactions of solutions with aqueous Strontium Chloride.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Aqueous Reactions: Zinc Nitrate
Reactions of solutions with Zinc Nitrate.
Aqueous Solution Chemistry |
Precipitation / Solubility
|
Cadmium Nitrate with Sodium Sulfide
Here, sodium sulfide (Na2S) is added to cadmium nitrate (Cd(NO3)2). The result is a deep yellow-orange precipitate.
Aqueous Solution Chemistry |
Precipitation / Solubility |
Reactions
|
Reactions in Aqueous Solutions
Various reactions in aqueous solutions are shown.
Aqueous Solution Chemistry |
Reactions |
Precipitation / Solubility
|
Crystallization of Supersaturated Sodium Acetate
A supersaturated solution of sodium acetate is poured onto one small sodium acetate crystal. Crystals form from the liquid immediately upon contact with the seed crystal. A thermometer shows that the crystallization process is exothermic. A chemical hot pack is shown as an example of a commercially available supersaturated solution.
Precipitation / Solubility |
Solutions / Solvents |
Calorimetry / Thermochemistry
|
Like Dissolves Like - Demonstration
Some substances dissolve readily in others. Some substances do not. Some substances are more dense than others.
Noncovalent Interactions |
Physical Properties |
Precipitation / Solubility
|
Like Dissolves Like - Multimedia Experiments
There are a total of six experiments you can view. You can view them in any order, as many times as you wish. Each experiment has three steps.
Noncovalent Interactions |
Physical Properties |
Precipitation / Solubility
|
Ammonia Fountains
An ammonia fountain is demonstrated.
Acids / Bases |
Aqueous Solution Chemistry |
pH |
Precipitation / Solubility
|
Ammonia Fountains - Multiple
System of multiple ammonia fountains are set up and run. A separatory funnel, four round-bottomed flasks, and some tubing form a closed system. One end of the tubing is immersed in an acetic acid solution that contains universal indicator. The glassware has been filled with ammonia gas. The stopcock of the funnel is closed.
Acids / Bases |
Aqueous Solution Chemistry |
pH |
Precipitation / Solubility
|
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
|
Solids-Liquids
Reactions and demonstrations exploring the properties of solids and liquids.
Solids |
Liquids
|
Scattering and Absorption of Light
The effects of passing light through a colloidal suspension of milk in water and through a solution of copper sulfate are shown.
Colloids |
Physical Properties |
Liquids
|
Viscosity of Liquids
The viscosities of water, 2-propanol (rubbing alcohol), ethylene glycol (antifreeze) and vegetable oil are compared. The viscosities of water, hexane, octane, 2,2,4-trimethylpentane and 1-pentanol are measured.
Liquids |
Physical Properties
|
Electrical Conductivity-Liquids
The conductivity of liquids are tested.
Conductivity |
Liquids |
Physical Properties
|
Vapor Pressure: Drinking Bird
A novelty store "Drinking Bird" repeatedly dips is beak into a beaker of water and then bobs back to an upright position. Visible movement of a liquid in the bird's body accompanies the bobbing; the movement is caused by changing vapor pressure of the liquid due to different temperatures at the bird's head and the bird's body.
Liquids |
Phases / Phase Transitions / Diagrams
|
Measuring Relative Viscosity
The rate of flow of six different liquids through a Mohr pipet is measured.
Liquids |
Physical Properties |
Laboratory Equipment / Apparatus
|
Paramagnetism: Nitrogen and Oxygen
A magnet is shown to strongly attract a pair of metal tongs. The magnet has no visible effect on liquid nitrogen, but when pale blue liquid oxygen is poured near the poles of the magnet, it shows definite attraction.
Magnetic Properties |
Atomic Properties / Structure |
Liquids
|
Ferrofluid
A magnet placed just below a dish containing ferrofluid generates an array of spikes in the fluid.
Liquids |
Magnetic Properties |
Metals |
Atomic Properties / Structure
|
Boiling by Cooling
A flask contains water and water vapor at 100C. Each time ice water is poured over the outside of the flask, the water inside the flask boils. Although the temperature of the water in the flask has decreased, in each instance boiling is observed.
Gases |
Liquids |
Phases / Phase Transitions / Diagrams
|
Vapor Pressure: Molecular Size
The measurement of pressure exerted by a vapor is demonstrated using barometers. Vapor pressure varies with the strength of the intermolecular forces in the liquid.
Gases |
Liquids |
Noncovalent Interactions |
Phases / Phase Transitions / Diagrams |
Physical Properties
|
Vapor Pressure of a Mixture: Raoult's Law
The measurement of pressure exerted by a vapor is demonstrated using barometers. Vapor pressure varies with the strength of the intermolecular forces in the liquid.
In this section we will look at vapor pressure of mixtures. We can calculate the vapor pressure of a mixture using Raoult's law.
Gases |
Liquids |
Noncovalent Interactions |
Phases / Phase Transitions / Diagrams |
Physical Properties
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