General chemistry

General chemistry

Industry: Chemistry

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General chemistry

Complete combustion

Chemistry; General chemistry

A combustion reaction that converts all of the fuel's carbon, hydrogen, sulfur, and nitrogen into carbon dioxide, water, sulphur dioxide, and N2 respectively.

Ionic radius

Chemistry; General chemistry

The radii of anions and cations in crystalline ionic compounds, as determined by consistently partitioning the center-to-center distance of ions in those compounds.

Residue

Chemistry; General chemistry

1. The substances left after an evaporation or distillation . 2. A recognisable molecular fragment embedded in a larger molecule; for example, amino acid "residues" within a protein .

Ferromagnetic materials exhibit magnetism even in the absence of an external magnetic field. Ferromagnetic materials contain regions where many paramagnetic atoms or ions have magnetic moments that ...

Oxidation half reaction

Chemistry; General chemistry

That part of a redox reaction that involves loss of electrons. In the oxidation half reaction, the oxidation number of one or more atoms within the reactants is increased.

Valence

Chemistry; General chemistry

The number of hydrogen atoms that typically bond to an atom of an element. For example, in H2O, oxygen has a valence of 2; carbon in CH4 has a valence of four.