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.
2016 Boston Marathon. More than 30,000 participants registered for the 2016 Boston Marathon, the third largest field in the race history. Runners sleep in the grass at the athletes village prior to the running of the 120th Boston Marathon in Hopkinton. Workers prep the finish line on Boylston Street in Boston.