Module 3 · The Particle World: Atoms and Molecules微观世界：原子与分子

Lessons in this chapter

1. 1.3.1Molecules and Atoms (Diffusion)
2. 1.3.2Inside the Atom: Protons, Neutrons, ElectronsScientific Notation
3. 1.3.3Atomic Number and Mass Number
4. 1.3.4Isotopes
5. 1.3.5Relative Atomic MassWeighted Averages
6. 1.3.6How Ions Form (Gaining and Losing Electrons)
7. 1.3.7A Short History of Atomic Models