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Sports Disasters

Dates and details of major disasters in sports 1955June 11, Le Mans, France: racing car in Grand Prix hurtled into grandstand, killing 82 spectators.1964May 24, Lima, Peru: more than 300 soccer…

Chemistry: Titrations

TitrationsChemistryAcids and BasesWhat Are Acids and Bases?Properties of Acids and BasesThe pH ScaleTitrationsBuffers I found a bottle in the stockroom of my lab about a year ago. When I opened it…

Classical Mythology: The Final Battles

The Final BattlesClassical MythologyAchilles: The Angry Young HeroDon't Try This at Home!To War!The Final Battles Though Achilles himself would not fight, he agreed to lend his armor to his squire,…

chromium

(Encyclopedia) chromiumchromiumkrōˈmēəm [key] [Gr.,=color], metallic chemical element; symbol Cr; at. no. 24; at. wt. 51.9961; m.p. about 1,857℃; b.p. 2,672℃; sp. gr. about 7.2 at 20℃; valence +2, +3…

chain reaction

(Encyclopedia) CE5 Chain reaction: A neutron (n) strikes the uranium nucleus (U-235), causing it to split into fission products A and B and release two neutrons. These neutrons can in turn cause…

fugitive slave laws

(Encyclopedia) fugitive slave laws, in U.S. history, the federal acts of 1793 and 1850 providing for the return between states of escaped black slaves. Similar laws existing in both North and South…

The Horn Book Award

For the most outstanding juvenile books in the U.S.: one award for outstanding fiction, one for outstanding nonfiction, one for outstanding illustration (since 1976); given by the Boston Globe…

Virginia

Virginia State Facts Entered Union: June 25, 1788 (10th State) Present constitution adopted: 1970 Fun Facts State abbreviation/Postal code: Va. / VA Nicknames: The Old Dominion; Mother of…