Final answer:
Volatile drugs can convert from a liquid to a gas and be exhaled through the lungs. These drugs have higher vapor pressure allowing them to evaporate easily, and they include substances like alcohol which can be detected on the breath following consumption and metabolism.
Step-by-step explanation:
The specific type of drugs that can transition from a liquid to a gas for elimination through the blood are volatile drugs. Volatile drugs have a higher vapor pressure than non-volatile substances, making them capable of evaporating easily at normal temperatures. The process of liquid drugs changing into a gaseous state and then being excreted by the lungs is similarly guided by principles of volatility. It’s important to understand that some drugs can undergo processes like hydrolysis and metabolism, converting them into different forms that are more readily excreted.
For instance, alcohol is a volatile substance that can be detected in the breath because it is excreted via the lungs after being turned into a gas. This exemplifies how certain drugs, due to their physical properties, can switch states and leave the body through respiratory expiration.