Despite crack and cocaine’s similarities, they have three major differences. First, although crack and cocaine are derived from the coca plant, they differ in form. Crack has the form of flakes whereas cocaine is found in the form of powder, which can be dissolved. Furthermore, both crack and cocaine contain cocaine, but in various percentages: crack contains as much as 90 percent pure cocaine whereas cocaine contains from 15 to 25 percent pure cocaine. Another major difference is how they enter the body. For example, crack is smoked in a pipe or cigarette. It enters the body by the lungs into the bloodstream. Cocaine, on the other hand, is inhaled as a powder or is injected if dissolved. It enters the body via the nasal mucosa into the bloodstream or, if injected, directly via the bloodstream.