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Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.

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xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Cathodic Protection

Protection of a metal (making ir a cathode) against corrosion by attaching it to a sacrifical anode of a more easily oxidized metal.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Varieties of garnet minerals

The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in elite jewelry.

Lead Storage Battery

Secondary voltaic cell used in most automobiles.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Electron Deficient Compounds

Compounds that contain at least one atom (other than H) that shares fewer than eight electrons.

Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.