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Videos: 9 results
Electrochemical Cells  
Techniques involved in measuring the voltage of an electrochemical cell and some common errors in constructing electrochemical cells are demonstrated.
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
Mistakes in Constructing Electrochemical Cells  
These movies are designed to show inappropriate laboratory procedures. They can be used in testing to have student spot errors.
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
Electrical Properties  
Use of the conductivity meter and techniques for measuring voltage of electrochemical cells are demonstrated.
Conductivity |
Laboratory Equipment / Apparatus |
Electrolytic / Galvanic Cells / Potentials
Metal-Iodine Reactions and Cells  
Electrochemical reactions are demonstrated and then used to do work.
Electrochemistry |
Electrolytic / Galvanic Cells / Potentials
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
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
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
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