Although many narcotic drugs and medications have similar effects or characteristics, each substance is unique. Here are some common examples. From codeine to heroin, there are many narcotic ...

Pure and Mixed Substances: In the world of chemistry, substances are broadly classified into two fundamental categories: pure and mixed substances. Understanding these distinctions is crucial as they ...

All substances have properties. These describe how a substance looks and behaves. There are two types of properties: physical and chemical. Watch this video about how physical and chemical properties ...

A substance use disorder (SUD) is a treatable, chronic disease characterized by a cluster of cognitive, behavioral and ...

Recent findings indicate that couples who form agreements limiting substance use may have better outcomes. Find out about the ...