Six lessons cover this chapter, one for each section. Open any of them on its own below, or meet it in place inside chapter 2 of the book. Tick a lesson off once you can predict what it will do before you touch it.
1
Atomic theory and the subatomic particles
Add protons, neutrons and electrons and see what you have made.
2
Isotopes and atomic mass
Mix isotopes to their natural abundance and get the average atomic mass.
3
4
5
Molecular compounds and formulas
Read empirical, molecular and structural formulas of the same compound.
6