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Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

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Pairing Energy

Energy required to pair two electrons in the same orbital.

Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Proton

A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms.

Differential Scanning Calorimetry (DSC)

A technique for measuring the temperature, direction, and magnitude of thermal transitions in a sample material by heating/cooling and comparing the amount of energy required to maintain its rate of temperature increase or decrease with an inert reference material under similar conditions.

Polymerization

The combination of many small molecules to form large molecules.

Fluorescence

Absorption of high energy radiation by a substance and subsequent emission of visible light.

20 interesting chemistry facts

20 interesting chemistry facts.