Readings

The Atom and Subatomic Particles. 

• Reading the following sections for chapter 4:

  • 4.7 Atom

  • 4.8 Electron

  • 4.9 Proton

  • 4.10 Neutron

  • 4.16 Atomic Number

  • 4.17 Mass Number 

Videos

Basic Atomic Structure

What does the inside of an atom look like? Here, we'll look at the subatomic particles ( protons, neutrons, and electrons) that make up the atom. We'll see how the electrons orbit the nucleus, and talk about the masses of protons, neutrons, and electrons in amu, or atomic mass unit.

Practice Problems

Proton, Neutron and Electron Practice Worksheet

Use your periodic table to determine the missing subatomic particles.