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hydrogen

(Encyclopedia) hydrogenhydrogenhīˈdrəjən [key] [Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14℃; b.p. −252.87℃;…

Brewer's: City of the Violet Crown

Athens is so called by Aristophanes iostefauoz (see Equites, 1323 and 1329; and Acharnians, 637). Macaulay refers to Athens as the “violet-crowned city.” Ion (a violet) was a…

1960 Olympic Greco-Roman Wrestling Results

Class   Flyweight (-114 1/2 lb) Dumitru Pirvulescu, ROM   Osman Sayed, UAE   Mohamed Paziraye, IRN Bantamweight (-125 3/4 lb) Oleg Karavayev, URS   Ion Cernea, ROM…

1 Chronicles: 20

1 Chronicles Chapter 20 1 And it came to pass, that after the year was expired, at the time that kings go out to battle, Joab led forth the power of the army, and wasted the country of the…

Anatomy and
Physiology: The Circulatory System

The Circulatory SystemAnatomy and PhysiologyThe Circulatory SystemCells, Bells!Blood Types and GeneticsNow I Know My WBCs You might remember that blood is a form of connective tissue (widely…

Chemistry: Types of Solids

Types of SolidsChemistrySolidsWhat Are Solids?Why Are Solids Solid?Types of Solids There are five main types of solids, each of which has its own properties and structures. Let's have a look.…

Glossary of Chemical Terms - H

HA B C D E F G H I J K L M N O P Q R S T U V W X Y Z half-cell An oxidation or reduction reaction that occurs at an electrode.Two half-cells must be combined to form an electrochemical cell. half-…

Glossary of Chemical Terms - M

MA B C D E F G H I J K L M N O P Q R S T U V W X Y Z macromolecule Name given to a very large, and in most cases biologically important molecule.Molar mass certain to be in the thousands of grams, at…

Glossary of Chemical Terms - P

PA B C D E F G H I J K L M N O P Q R S T U V W X Y Z peptide A small polymer of amino acids, formed by the condensation copolymerization of several amino acids. period The horizontal rows in the…