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At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

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Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

How to make crystal glass

From history we know that the idea of creating crystal belongs to the British: they were the first to add lead oxides to the charge material, and as a result got glass with unusual “voice”, transparency and sparkling faces. Classical crystal contains 24% of lead oxide, but there are products with a higher content of up to 30%.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Hydrolysis

The reaction of a substance with water or its ions.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Reducing Agent

The substance that reduces another substance and is oxidized.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.