Double bonds that are separated from each other by one single bond -C=C-C=C-.
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Diamonds Are Forever
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What's In Your Beverage? How to Ensure Quality Control with CO2 Analytical Support
Calibration standards, performance audits, and the FDA's never-ending safety, labeling, and inspection requirements are just the tip of the iceberg when it comes to dealing with the increasingly stringent quality control standards of the beverage industry. As these quality standards become...
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Gas of rotten eggs
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Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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Features of the Scanning Tunneling Microscope
The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...
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Rate-determining Step
The slowest step in a mechanism, the step that determines the overall rate of reaction.
Film badge
A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.
PseudobinaryIonic Compounds
Compounds that contain more than two elements but are named like binary compounds.
Dipole
Refers to the separation of charge between two covalently bonded atoms.
Debye
The unit used to express dipole moments.
Oxidizing Agent
The substance that oxidizes another substance and is reduced.
Distilland
The material in a distillation apparatus that is to be distilled.
Hydrogenation
The reaction in which hydrogen adds across a double or triple bond.
Hydrogen Bond
A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.
xanthene dye
Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.
