TopicChapter-SectionName of Videodisc DemonstrationDescription
Gases1aCombustion of Methane BalloonsIgnition of balloons containing methane and methane + oxygen
Density differences
Stoichiometry
Balanced equation
7aPreparation and Combustion of AcetyleneCalcium carbide lumps are dropped into a beaker of water. Bubbles of acetylene are produced. Acetylene is ignited to produce a sooty flame.
Equation
7bSpontaneous Combustion of Acetylene in ChlorineAcetylene produced from reaction of calcium carbide and chlorine water bursts into flame and produces a copious amount of soot
Combustion Reaction
Solids and Liquids3a-dRelationship of Structure to Boiling Point of AlkanesShows 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
9bPolarized Light and Organic MoleculesDemonstration 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
13cExtraction of 2,6- dichloroindophenolDemonstrates use of separatory funnel
Acid/base chemistry
immiscible liquids
polar and nonpolar forces
13fPurple BenzeneThe 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.
15cHydrophobic EffectTwo 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

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