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Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

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Alkaline Earth Metals

Group IIA metals

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Central Atom

An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

20 interesting chemistry facts

20 interesting chemistry facts.

yttria

Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.

Electronic Transition

The transfer of an electron from one energy level to another.

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.

 

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.