| Videos: 20 results |
Boiling Points of Straight-Chain Alkanes
The boiling points of straight-chain alkanes with 5-10 carbon atoms are determined.
Alkanes / Cycloalkanes |
Molecular Properties / Structure |
Physical Properties
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Structures and Conformations
Molecular models are used to demonstrate the conformations of alkanes and cycloalkanes.
Alkanes / Cycloalkanes |
Molecular Properties / Structure |
Nomenclature / Units / Symbols |
Stereochemistry
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Boiling Points of Hexane Isomers
The boiling points of the five isomers of hexane are determined.
Alkanes / Cycloalkanes |
Molecular Properties / Structure |
Constitutional Isomers |
Physical Properties
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Relation of Structure to Boiling Point of Alkanes
The boiling point of straight-chain alkanes and isomers of hexane are determined and molecular models of the hydrocarbons are shown.
Alkanes / Cycloalkanes |
Molecular Properties / Structure |
Physical Properties |
Constitutional Isomers
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Hydrophobic Effect
Hydrophobic Effect: Octanoic acid forms a monolayer on the surface of water under certain conditions.
Alkanes / Cycloalkanes |
Carboxylic Acids |
Molecular Properties / Structure |
Water / Water Chemistry |
Noncovalent Interactions
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Alkanes and Cycloalkanes
The structures and conformations of alkanes and cycloalkanes and the vibrational, rotational, and translational motion of alkanes in the gas phase are demonstrated.
Alkanes / Cycloalkanes
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Paramagnetism
The paramagnetic properties of oxygen are demonstrated using a strong magnet, and compared with diamagnetic nitrogen.
Magnetic Properties |
Molecular Properties / Structure
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Combustion of Methane
Methane combustion in balloons, a Bunsen burner flame, and methane combustion in chlorine are demonstrated.
Alkanes / Cycloalkanes |
Reactions
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Combustion of Hexane
Combustion of hexane with limited oxygen and addition of water to burning hexane are demonstrated.
Alkanes / Cycloalkanes |
Reactions
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Bromination of Hydrocarbons
The light initiated bromination of pentane, hexane isomers, alkyl benzenes and a comparison of bromination of pentane and pentene are demonstrated.
Alkanes / Cycloalkanes |
Reactions
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Glyceraldehyde and the Fischer Projection
Molecular models are used to demonstrate chirality of glyceraldehyde and drawing its Fischer Projection.
Chirality / Optical Activity |
Stereochemistry |
Molecular Properties / Structure
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Plastic Sulfur
Yellow powdered sulfur is heated until it becomes molten and brown. At first it flows freely, but then it becomes very viscous. Upon further heating, the viscous sulfur flows freely again and ignites. The burning liquid sulfur is poured into a beaker of water. When removed from the water, the sulfur is rubbery and flexible.
Molecular Properties / Structure |
Physical Properties |
Solids
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Ring Strain
Mixing solid iodine and cyclohexene shows little reaction but mixing iodine and alpha-pinene produces a very vigorous exothermic reaction and sublimation of solid iodine to dense iodine vapor.
Addition Reactions |
Molecular Properties / Structure |
Applications of Chemistry
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Bonding
Reactions and demonstrations that explore the concepts of bonding.
Molecular Properties / Structure |
Atomic Properties / Structure
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Alkanes in Motion
Animations of gas-phase hydrocarbon systems show the motion of molecules.
Alkanes / Cycloalkanes |
Molecular Mechanics / Dynamics
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Structure-Property Relations for Alkanes and Alcohols
Boiling points of alkanes, miscibility of alcohols, and the vapor pressure and viscosity of several organic compounds are demonstrated.
Alkanes / Cycloalkanes |
Physical Properties |
Alcohols
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pH of Acetic Acid Derivatives
The pH of acetic acid, monochloro-, dichloro-, trichloro-, and trifluoroacetic acids are compared.
Acids / Bases |
Carboxylic Acids |
pH |
Physical Properties |
Molecular Properties / Structure
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Piezoelectric Effect
Sounds accompany the discharges of electricity.
A piezoelectric crystal is connected to a light bulb. When the crystal is pressed, the light flashes.
Crystals / Crystallography |
Molecular Properties / Structure |
Solid State Chemistry |
Solids
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Vapor Pressure: Molecular Size
The vapor pressures of pentane, hexane, and heptane are compared. The vapor pressures of methanol and ethanol are compared. Molecular models of the compounds are shown.
Alkanes / Cycloalkanes |
Noncovalent Interactions |
Physical Properties |
Alcohols
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Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.
Oxidation of cyclohexane, cyclohexene, and cyclohexanol by permanganate and chromic acid are demonstrated.
Alcohols |
Alkanes / Cycloalkanes |
Alkenes |
Oxidation / Reduction
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