* Solids: Rocks, trees, your phone, a chair, etc.
* Liquids: Water, juice, oil, etc.
* Gases: Air (made of nitrogen, oxygen, and other gases), helium in a balloon, etc.
Even things you can't see directly, like:
* Plasma: The state of matter found in the sun and other stars.
* Light: While not technically made of atoms, light is created by the interaction of atoms.
Essentially, everything in the physical universe is made up of atoms, with the exception of a few exotic particles like photons and neutrinos.
