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 ...

Elements and Compounds: Understanding elements and compounds is basic knowledge to study chemistry. Elements are the basic building blocks of matter, while compounds are substances formed when two or ...

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 ...

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 ...

Nootropics—for example, caffeine—are compounds that, if used correctly, are safe and can enhance your cognitive performance and mood. You can develop tolerance to some nootropics if you don’t cycle ...

Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...