Sprint 12 · Chapter 2

Discovery Of Particles & Early Models

Understand the subatomic composition of the atom and the concepts of atomic number, mass number, and isotopes.

1. 1Smashing the Indivisible Atom
2. 2Image Block
3. 3dynamic
4. 4Atomic Number and Mass Number
5. 5Worked Example: Counting Particles
6. 6Faded Example: Identifying the Species
7. 7Practice: Isobars and Isotopes