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Hydrocarbons that contain double or triple carbon-carbon bonds.

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D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Double Bond

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

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Faraday

One faraday of electricity corresponds to the charge on 6.022 x 1023 electrons, or 96,487.301 coulombs.

Law of Conservation of Matter

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

Standard Electrode Potential

By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

Mechanism

The sequence of steps by which reactants are converted into products.

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.

Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.