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A substance that conducts electricity well in a dilute aqueous solution.

 

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    One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...

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Supersaturated Solution

A solution that contains a higher than saturation concentration of solute, slight disturbance or seeding causes crystallization of excess solute.

Film badge

A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.

Nickel-cadmium cell (Nicad battery)

A dry cell in which the anode is Cd, the cathode is NiO2, and the electrolyte is basic.

Extrapolate

To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.

Fluids

Substances that flow freely, gases and liquids.

Primary Standard

A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

Valence Shell Electron Pair Repulsion Theory

Assumes that electron pairs are arranged around the central element of a molecule or polyatomic ion so that there is maximum separation (and minimum repulsion) among regions of high electron density.

 

Emulsion

Colloidal suspension of a liquid in a liquid.

Enantiomer

One of the two mirror-image forms of an optically active molecule.