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The chemistry of substances that contain carbon-hydrogen bonds.

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Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Fluorescence

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

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Halogens

Group VIIA elements: F, Cl, Br, I

Catalyst

A substance that speeds up a chemical reaction without being consumed itself in the reaction.
A substance that alters (usually increases) the rate at which a reaction occurs.

Crystal Lattice

A pattern of arrangement of particles in a crystal.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Metathesis Reactions

Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.

 

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Third Law of Thermodynamics

The entropy of a hypothetical pure, perfect, crystalline sustance at absolute zero temperature is zero.