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Secondary voltaic cell used in most automobiles.

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    If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

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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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    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...



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Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Ionic Geometry

The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.

Electroplating

Plating a metal onto a (cathodic) surface by electrolysis.

Extensive Property

A property that depends upon the amount of material in a sample.

Titration

A Procedure in which one solution is added to another solution until the chemical reaction between the two solutes is complete, the concentration of one solution is known and that of the other is unknown.

 

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Collision Theory

Theory of reaction rates that states that effective collisions between reactant molecules must occur in order for the reaction to occur.

Binary Acid

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

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.