Intro to the Atom - CHEM 101 Introductory Chemistry

I talk about the subatomic particles that construct an atom -- protons (p+,) neutrons (n), and electrons (e-). We talk about their fundamental properties of charge, mass, and size. We then put it together into a Bohr atom atomic model. [This video does not address how we know the nucleus to contain the protons and neutrons, with electrons on the outside, or the origins of atomism... nor does it discuss how the charges or masses were measured... those will be in other videos!]

0:00 Overview -- what this video is, and isn't.
0:45 Subatomic particles: protons and neutrons in the nucleus, electrons on the outside.
1:19 Properties of the subatomic particles: charge (e, aka elementary charges), mass (amu), and radius (fm)
5:16 Are subatomic particle sizes measurable?
9:17 Bohr model of the atom. An atom is like dropping a pea (nucleus) into the center of a stadium (electron space, aka electron cloud).
10:52 How charges work (explains why electron hangs out near proton). Opposite charges attract, like charges repel. This is called the electrostatic force, aka the Coulombic force.
12:56 Paradoxical conclusion: most of the atom mass is the nucleus, but most of the space of the atom is the electron space.