ionic compound
ionic compound Substance formed by ionic bonding, a chemical bond of positively and negatively charged
ions. Salts, bases and some acids are ionic compounds. As crystalline solids, they have high melting points and boiling points. As solids, they are nonconductors of electricity, and are usually soluble in water but insoluble in organic solvents. In the liquid and molten states, ionic compounds are good conductors.
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Noah Ptolemy brings funky artistic style to U. Montana area
News Wire article from: University Wire; 9/28/2007; ; 700+ words
; ...Queen in Yelm, Wash., Noah Silvercloud Ptolemy realized he was miserable.He had attended...University of Montana -- nothing had clicked. Ptolemy spent a fair amount of time wandering...finding his passion for painting. When Ptolemy left the "tragedy" that was Yelm, Wash...
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PTOLEMY I GAINS CONTROL OF EGYPT.(321 B.C.)
Magazine article from: Calliope; 10/1/2001; ; 700+ words
; ...imprinted on coins such as this one of Ptolemy I to affirm their rule and important events...empire among themselves. One general, Ptolemy, a childhood companion of Alexander's, decided that he wanted to rule Egypt. Ptolemy Valued Egypt because of its antiquities...
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IN PTOLEMY'S MAPS, COLUMBUS SAW HIS DESTINY
Newspaper article from: The Boston Globe; 10/12/1992; ; 700+ words
; ...long: the "Geography" of Claudius Ptolemy, and the invention of printing. Scarcely anything is known of Ptolemy the man. He lived in the first half...Columbus inevitable. It is significant that Ptolemy lived at Alexandria. That city had long...
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Ptolemy of Egypt.
Magazine article from: The Journal of the American Oriental Society; 10/1/1996; ; 700+ words
; ...may well be disappointed. For the Ptolemy described herein is a cautious and level...Shakespeare's Antony. Concisely written, Ptolemy of Egypt is not so much a biography of...sources at hand? Since little is known of Ptolemy's early years - he was forty-four...
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LIKE FATHER, LIKE SON.(Ptolemy II )
Magazine article from: Calliope; 10/1/2001; ; 700+ words
; At the age of 25, Ptolemy II (also known as Ptolemy Philadelphus) succeeded Ptolemy I as king of Egypt. Following in his father's footsteps, he sought to extend the influence of Ptolemaic rule across the newly Hellenized Mediterranean world...
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Ptolemy of Egypt. (book reviews)
Magazine article from: History Today; 6/1/1995; ; 700+ words
; ...contemporary with it. This is Ellis' book on Ptolemy I. In his short book Ellis has struggled...major problems - the lack of evidence for Ptolemy himself, he need to summarise the diabolical...little more than a good retelling from Ptolemy's viewpoint of an oft-told tale...
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The "G" in GIS: rethinking Ptolemy in the age of Web 2.0.
Magazine article from: GEO World; 3/1/2009; ; 700+ words
; ...thoughts in pursuit of new technical tricks. Ptolemy's Time A prominent ancient geographer...150?)--more popularly known as Ptolemy in English--who made important contributions to geography and spatial thinking. Ptolemy is well known for his seven-volume Guide...
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Precious Ptolemy map recovered in Sydney.
News Wire article from: PTI - The Press Trust of India Ltd.; 10/20/2007; 555 words
; Precious Ptolemy map recovered in Sydney Melbourne, Oct 20 (PTI...1482 map based on the work of the ancient astronomer Ptolemy has finally been traced in Australia. The Ulm Ptolemy World Map, which illustrates what was then known about...
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Viacor, Inc. Announces First Patient Treated in PTOLEMY-2 Study.
PR Newswire; 11/14/2008; 700+ words
; ...announced today that the first patient in the PTOLEMY-2 (Percutaneous TransvenOus Mitral...has recently been successfully treated. PTOLEMY-2 is an international, multi-center...in heart failure patients. The first PTOLEMY-2 patient was treated by Rainer Hoffmann...
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Ptolemy versus Copernicus.
Magazine article from: Calliope; 2/1/2004; ; 687 words
; ...was first created around A.D. 150 by Ptolemy in Alexandria. Placing the earth near...adjusting the dimensions and rates of motion, Ptolemy produced models of planetary movement...Copernicus used his spare time to rework Ptolemy's models. His scheme, in which he...
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Ptolemy I
Encyclopedia entry from: U*X*L Encyclopedia of World Biography
Ptolemy I Born: c. 366 b.c.e. Macedonia...Macedonian military leader, general, and ruler Ptolemy I (c. 366 – 283 b.c.e...kings — all of whom were named Ptolemy — who reigned over Egypt for...
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Ptolemy II
Encyclopedia entry from: Encyclopedia of World Biography
Ptolemy II Ptolemy II (308-246 B.C.) was a king of Egypt, the second and greatest...Brother-loving, " which he shared with his wife Arsino ë . Ptolemy was born in Cos, the younger son of Ptolemy I by his favorite wife...
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Claudius Ptolemy
Encyclopedia entry from: Encyclopedia of World Biography
Claudius Ptolemy The Greek astronomer, astrologer, and geographer Claudius Ptolemy (ca. 100-ca. 170) established the system...Christian and Moslem countries until the 16th century. Ptolemy is known to have made astronomical observations...
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Ptolemy (or Claudius Ptolemaeus)
Dictionary entry from: Complete Dictionary of Scientific Biography
PTOLEMY (OR CLAUDIUS PTOLEMAEUS) ( b. ca. a...especially astronomy. Our meager knowledge of Ptolemy ’ s life is based mostly on deductions...statement of a scholiast attached to works of Ptolemy in several late manuscripts —...
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Ptolemy (CA. 100-170)
Book article from: World of Earth Science
Ptolemy (ca. 100-170) Greek astronomer Very little is known about Ptolemy's early life. Born in Alexandria, Egypt, as...later latinized as Claudius Ptolemaeus, and later Ptolemy. Ptolemy's chief contribution to science is a...
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