What an atom is —
protons, neutrons,
electrons — for a
first chem class. A
simple model you can
actually picture.

Explain Basic Chemistry: What an Atom Actually Is

Protons, neutrons, electrons, and a picture you can actually hold in your head.

Prompt

Explain what an atom actually is — protons, neutrons, electrons — clearly enough for a first chemistry class, using a simple model I could actually picture in my head.