Isotopes and relative atomic mass: Isotopes, mass spectra and calculating relative atomic mass from abundances

What this note covers

1. What an isotope actually is
2. Reading and writing atomic symbols
3. Same chemistry, different physics
4. Mass spectroscopy: measuring isotopic composition
5. Relative atomic mass: the definition TASC wants
6. Calculating relative atomic mass from abundances
7. Working backwards: finding abundances from relative atomic mass
8. How this topic is examined in Section A

8 sections · 12 key terms & formulas · 6 common mistakes