Polar compounds, on the. other hand, attract each other and bind close. Water has a lot of. hydrogen bonding and is particularly dense.) Chemical Properties: Combustion: Hydrocarbons easily combust in the presence of oxygen. They are commonly used for fuel. Wood, fuel oil, gasoline, diesel, and.
The Boston Marathon is an annual marathon hosted by several cities in greater Boston in eastern Massachusetts, United States. It is always held on Patriots' Day, the third Monday of April. Begun in 1897, inspired by the success of the first marathon competition in the 1896 Summer Olympics, the Boston Marathon is the world's oldest annual marathon and ranks as one of the world's best-known road racing events.
Boston Marathon Bombings: Race Day Turns Deadly. April 15, 2013, marked the 117th running of the Boston Marathon, the worldâs oldest annual marathon. The event is held on Patriotsâ Day, which commemorates the 1775 battles of Lexington and Concord that kicked off the American Revolutionary War.