For more than a century, chemists have developed drugs essentially by combining elements from the periodic table. But, after contributing substantially to both human health and drug-company ...

New books, websites, apps and toys have spurred more interest in the periodic table than ever, engaging many people who snoozed through chemistry class.

To all budding chemists, learn about a wide range of substances defined as being made up entirely from one type of atom in this multiple-choice challenge.