| Videos: 16 results |
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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Chiral and Achiral Objects
A snail shell, pencil, glove, hand, and molecular models are shown with their mirror reflections.
Chirality / Optical Activity
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Polarized Light and Organic Molecules: Everyday Objects
The liquid crystal display of a calculator and several plastic objects are examined between polarizing filters.
Chirality / Optical Activity
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Polarized Light and Organic Molecules
Polarizing filters and the rotation of polarized light by chiral compounds are demonstrated and a polarimeter is shown. Several everyday objects are examined between polarizing filters.
Chirality / Optical Activity
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Chirality
A series of chiral and achiral objects, the interaction of polarized light with organic molecules, the assignment of R- and S- configuration, Fisher projections, and a stereospecific reaction are demonstrated.
Chirality / Optical Activity |
Stereochemistry
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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
|
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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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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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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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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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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