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The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

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Percent Composition

The mass percent of each element in a compound.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Radioactive Tracer

A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.

History of fireworks

There is an assumption that the history of fireworks started in China, about 2000 years ago. It is possible that the Chinese accidentally discovered explosions by burning bamboo canes.

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.

Outer Orbital Complex

Valence bond designation for a complex in which the metal ion utilizes d orbitals in the outermost (occupied) shell in hybridization.