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.
What are Black Codes? Black Codes were a series of laws passed after the Civil War that denied freed slaves the right to vote, own property, or marry outside their race, among other things. View slideshow of images above Watch the Did-You-Know slideshow