Cocaine is a narcotic drug obtained from the leaves of the coca plant.
The leaves are soaked in substances such as kerosene and paint thinner to make a thick paste. The paste is refined into a white, crystal powder. Crack is cocaine that has been processed into a smokeable form. Cocaine is changed into crack by adding products such as ammonia or baking soda. Crack appears as small, colored rocks or chips that vary in size, shape, color and consistency but are generally yellowish or beige in color and have a waxy appearance resembling soap chips.