Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

Compound libraries are curated collections of chemical molecules used in drug discovery. A range of screening collections, ...

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 ...