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 ...

While these are examples of common substances, the term “substance use” can be broadly defined and may vary from person to person. It’s also important to know that there is no one-size-fits-all ...

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 ...

In everyday life, for example on food packaging, the word ‘pure’ usually means that something is in its natural state without anything added to it, like sweeteners or preservatives. Natural fruit ...

New Zealand's mainstay drug law turned 50 this year—yet we still don't have a clear, comprehensive picture of the social ...

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 ...