Examples of chemical change: During a chemical change, a new chemical composition and new properties are formed. Examples of chemical changes are: burning of wood, cooking of food, rusting of iron and souring of milk.
The Black Heritage Trail is a path in Boston, Massachusetts, winding through the Beacon Hill neighborhood and sites important in American black history.
Black billionaires. This article refers to U.S. dollar billionaires who have Black African ancestry. Aliko Dangote, the world's wealthiest black person. Oprah Winfrey at the White House in 2010, the first female black billionaire and the only black billionaire from 2004 to 2006. According to Forbes 2014 ranking of the world's billionaires, Nigerian business magnate Aliko Dangote with a net worth of $25 billion is the world's richest black person.