1 Atoms and Elements Chapter 2. 2 Atomic theory John Dalton, 1808: matter is made of tiny indestructible particles called atoms What evidence persuaded.
AP Chemistry Big Idea 1 MASS SPECTROMETRY. The first mass spectrometer was built in 1918 by Francis W Aston, a student of J J Thomson, the man who discovered.
Modern Analytical Techniques 1.Infra red Spectroscopy.
Proton A nuclear particle having a positive charge equal to that of the electron and a mass more than 1800 times that of the electron The number of.
