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Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

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Hydrolysis Constant

An equilibrium constant for a hydrolysis reaction.

Handmade crystal glass as a work of art

In order for the colored crystal to open in all its beauty and sparkle with every face natural light is required. Handmade crystal glass has specific tactile and aesthetic properties - it is pleasant to touch, it seems to radiate heat. To appreciate the quality and beauty of such things, of course, it is not enough to look at the picture.

Saturated Solution

Solution in which no more solute will dissolve.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Reactants

Substances consumed in a chemical reaction.

Henry's Law

The pressure of the gas above a solution is proportional to the concentration of the gas in the solution.

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Carbanion

An organic ion carrying a negative charge on a carbon atom.

Dumas Method

A method used to determine the molecular weights of volatile liquids.

Fluorescence

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