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

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Lone Pair

Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

Barometer

A device for measuring pressure.

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.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Amine

Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.

Ion Product for Water

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

Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.

Creating Malachite egg

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 effective and visual, and as a result we will get something beautiful.

Carcinogen

A substance capable of causing or producing cancer in mammals.