Final answer:
Crack cocaine is not a very stable form compared to cocaine hydrochloride; it is more volatile and is smoked, reaching the brain very quickly.
Step-by-step explanation:
False, crack cocaine is not a very stable form of the drug known as cocaine hydrochloride; it is, in fact, more volatile.
Cocaine hydrochloride is the salt form that is easily dissolved in water, making it well-suited for absorption through the mucous membranes, such as when it's snorted.
On the other hand, crack cocaine refers to the freebase form of cocaine that can be smoked. Its volatility is evident by the fact that it vaporizes at lower temperatures, such as those of a burning cigarette, and when smoked, it reaches the brain in about 15 seconds.