You're thinking of the elements, which are the 92 naturally occurring substances that make up all matter.

Here's why it's important to clarify:

* Elements: The purest form of a substance. Each element is made up of only one type of atom.

* Atoms: The smallest unit of an element that still retains the chemical properties of that element.

While there are 92 naturally occurring elements, there are actually 118 known elements in total, with the remaining elements being artificially created.

Let me know if you'd like to learn more about elements or atoms!