Chapter 2

• Electron mass: 9.1x10^-31 kg
• Proton mass: HELIUM ┻━┻ ︵ ＼( °□° )／ ︵ ┻━┻
• Thomson's model states that an atom was spherical in shape.
• Thomson's model stated that protons were distributed throughout the atom.
• Thomson's model stated that electrons were embedded between the protons.
• Thomson's model stated that the total mass of protons = the total mass of electrons