| Topic | Chapter-Section | Name of Videodisc Demonstration | Description |
|---|---|---|---|
| Gases | 1a | Combustion of Methane Balloons | Ignition of balloons containing methane and methane + oxygen |
| Density differences | |||
| Stoichiometry | |||
| Balanced equation | |||
| 7a | Preparation and Combustion of Acetylene | Calcium carbide lumps are dropped into a beaker of water. Bubbles of acetylene are produced. Acetylene is ignited to produce a sooty flame. | |
| Equation | |||
| 7b | Spontaneous Combustion of Acetylene in Chlorine | Acetylene produced from reaction of calcium carbide and chlorine water bursts into flame and produces a copious amount of soot | |
| Combustion Reaction | |||
| Solids and Liquids | 3a-d | Relationship of Structure to Boiling Point of Alkanes | Shows boiling point of straight chain alkanes containing 5 to 10 carbon atoms |
| Shows boiling point of 5 isomers of C6H14 | |||
| Data can be graphed to illustrate effect of Van der Waals attraction on boiling point | |||
| molecular models of all compounds shown | |||
| 9b | Polarized Light and Organic Molecules | Demonstration of polarized filters and polarimeter | |
| When plane polarized white light is passed through a cylinder of aqueous sucrose, a spiral rainbow of color is observed | |||
| Rainbow images of plastic objects under polarized light | |||
| Polarization of liquid crystal display of a calculator | |||
| 13c | Extraction of 2,6- dichloroindophenol | Demonstrates use of separatory funnel | |
| Acid/base chemistry | |||
| immiscible liquids | |||
| polar and nonpolar forces | |||
| 13f | Purple Benzene | The ionic solid potassium permanganate does not dissolve in nonpolar benzene. A crown ether complexes with the potassium ion to produce a purple solution. | |
| Molecular model of crown ether | |||
| Crown ethers discovered by Charles Peterson who received Nobel Prize in 1987. | |||
| 15c | Hydrophobic Effect | Two Petri dishes with water are dusted with lycopodium powder. A drop of nonpolar mineral oil leaves the powder undisturbed. A drop of polar oleic acid pushes the powder to the sides of dishes as the acid spreads across the surface. | |
| A drop of oleic acid on water breaks up when treated with NaOH. | |||
| Polar and nonpolar liquids |
Click here to return to the menu.