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Conduction of electrical current by ions through a solution or pure liquid.

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Compound in which an oxygen atom is bonded to two alkyl or two aryl groups, or one alkyl and one aryl group.

Allotropic Modifications (Allotropes)

Different forms of the same element in the same physical state.


A class of silicate and aluminosilicate minerals with sheet-like structures that have enormous surface areas that can absorb large amounts of water.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.


Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

A brief history of dyeing fabrics

 Dyeing fabrics is giving the fibers a homogeneous color that has a certain degree of strength. The methods of dyeing are very diverse, depending on the properties of the dyes and the dyed fibers.

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Atomic Mass Unit (amu)

One twelfth of a mass of an atom of the carbon-12 isotope, a unit used for stating atomic and formula weights, also called dalton.

Rate-law Expression

Equation relating the rate of a reaction to the concentrations of the reactants and the specific rate of the constant.

Law of Conservation of Energy

Energy cannot be created or destroyed, it may be changed from one form to another.