First, let's cover the basics. A pure substance is made from only one compound or just one element with no other substances mixed in. Hold up those two glasses, Katie. Imagine the pompoms ...

First, let's cover the basics. A pure substance is made from only one compound or just one element with no other substances mixed in. Hold up those two glasses, Katie. Imagine the pompoms ...

A chemical element is one of those squares on the ... which we could call a ‘pure substance’ instead. Receive a weekly dose of discovery in your inbox! We'll also keep you up to date with ...