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Double bonds that are separated from each other by one single bond -C=C-C=C-.

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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.