This all-in-one lesson is a simple introduction to the main scientists involved in the discovery of the atom and atomic theory! Includes a overview of the 8 major scientists of the atomic theory and their discoveries and models- Democritus, Dalton, Thomson, Rutherford, Bohr, Schrodinger, Heisenberg, and Chadwick. This lesson has: ★ 2 PowerPoint Presentations (modified and non-modified) ★ Guided notes ★ Color-by-number worksheet ★ Quiz