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 ...

an element contains just one type of atom a compound contains two or more types of atom joined together a mixture contains two or more different substances that are not joined together the different ...

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 ...