Well, the parts of the bike are made of things like rubber, plastic and metal. And those materials can be broken down into their own components. These components can be broken down into molecules and atoms.

And molecules consist of atoms, and atoms are made of protons, neutrons and electrons. Protons and neutrons can be broken down into quarks. There are several different "flavors" of quarks, including strange, color, up, down ...

Let's start by looking at one of the smallest, most basic components of matter we know about.