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The material in a distillation apparatus that is collected in the receiver.

 

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Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Molar Solubility

Number of moles of a solute that dissolve to produce a litre of saturated solution.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Accuracy

How closely a measured value agrees with the correct value.

Electrophile

Positively charged or electron-deficient.

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

xylidine

Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.

Doublet

Two peaks or bands of about equal intensity appearing close together on a spectrogram.

Differential Thermometer

A thermometer used for accurate measurement of very small changes in temperature.

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.

Electronegativity

A measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another atom.

Silicones

Polymeric organosilicon compounds, contain individual or cross-linked Si-O chains or rings in which some oxygens of SiO4 tetrahedra are replaced by other groups.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.

xenon

A heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe, at. wt.: 131.30, at. no.: 54.

Exothermic

Describes processes that release heat energy.

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Bonding Orbital

A molecular orbit lower in energy than any of the atomic orbitals from which it is derived, lends stability to a molecule or ion when populated with electron.