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Of electrons, refers to bonding electrons that are distributed among more than two atoms that are bonded together, occurs in species that exhibit resonance.
The formation of a set of molecular orbitals that extend over more than two atoms, important in species that valence bond theory describes in terms of resonance.

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Critical Pressure

The pressure required to liquefy a gas (vapor) at its critical temperature.

Leclanche Cell

A common type of dry cell.

Precipitate

An insoluble solid formed by mixing in solution the constituent ions of a slightly soluble solution.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

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.

 

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

Harmful Chemicals Found In Food

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Flotation

Method by which hydrophobic (water-repelling) particles of an ore are separated from hydrophilic (water-attracting) particles of a metallurgical pretreatment process.

Heat of Solution

The amount of heat absorbed in the formation of solution that contains one mole of solute, the value is positive if heat is absorbed (endothermic) and negative if heat is released (exothermic).

Partial Pressure

The pressure exerted by one gas in a mixture of gases.