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

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Most Popular

Surface Tension

It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

Eluate

Solvent (or mobile phase) which passes through a chromatographic column and removes the sample components from the stationary phase.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Specific Rate Constant

An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.

yttria

Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.

Atmosphere

A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Single Bond

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

Polydentate

Refers to ligands with more than one donor atom.