General chemistry i

0.3 Observation 1: mass relationships during chemical reactions
0.4 Observation 2: multiple mass ratios
2.3 Observation 1: scattering of α particles by atoms
2.4 Observation 2: x-ray emission
2.5 Observation 3: ionization energies of the atoms
3.3 Observation 1: the spectrum of hydrogen
3.4 Observation 2: the photoelectric effect
3.6 Observation 3: photoelectron spectroscopy of multi-electron atoms
3.7 Electron waves, the uncertainty principle, and electron energies
8.3 Observation 1: measurement of heat by temperature
8.4 Observation 2: hess' law of reaction energies
8.5 Hess' law
8.6 Observation 3: bond energies in polyatomic molecules

Source:  OpenStax, General chemistry i. OpenStax CNX. Jul 18, 2007 Download for free at http://cnx.org/content/col10263/1.3