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Videos: 13 results
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
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
Sulfuric Acid into Water and Ice  
When sulfuric acid is mixed with water the temperature rises. When sulfuric acid is added to ice, the temperature rises at first, but as the ice melts, the temperature falls.
Calorimetry / Thermochemistry
Endothermic Reaction  
Solid barium hydroxide octahydrate (Ba(OH)2*8H2O) and ammonium thiocyanate (NH4SCN) are mixed in a beaker, which is then placed on a few drops of water on a small board. The reaction that occurs is highly endothermic.
Calorimetry / Thermochemistry |
Thermodynamics
Heat Conduction by Diamond  
Diamond is shown to conduct heat better than aluminum.
Physical Properties |
Calorimetry / Thermochemistry
Electrical Conductivity-Solutions  
Solutions are measured for conductivity.
Conductivity |
Solutions / Solvents |
Physical Properties
Calorimeter  
A coffee-cup calorimeter is demonstrated.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
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
Energy from Oxidation of Food  
Food undergoes rapid oxidation when placed in molten potassium chlorate.
Calorimetry / Thermochemistry |
Kinetics |
Oxidation / Reduction |
Reactions |
Nutrition
Oxidation of Glycerin by Potassium Permanganate  
Oxidation of glycerin (1,2,3-propanetriol) by potassium permanganate is demonstrated.
Alcohols |
Calorimetry / Thermochemistry |
Oxidation / Reduction |
Reactions