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Covalent bond in which electron density is symmetrically distributed.

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Single Bond

Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.

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.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Lewis Base

Any species that can make available a share in an electron pair.

Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.

ytterbium

A rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb, at. wt.: 173.04, at. no.: 70, sp. gr.: 6.96. Cf."rare-earth element."

 

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Ion Product for Water

Equilibrium constant for the ionization of water, Kw = [H3O+][OH-] =1.00 x 10-14 at 25 °C.