When you walk by someone smoking cannabis, the smell is unmistakable. The compounds that produce the potent smell of weed fall under the same class of compounds that produce the citrusy smell of ...

An entirely new class of super-reactive chemical compounds has been discovered under atmospheric conditions. Researchers have documented the formation of so-called trioxides -- an extremely oxidizing ...

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 ...