Atomic Theory (Scientists)

-all matter was formed of smaller pieces that could not be cut into smaller pieces -“Atomos” - atoms (uncuttable)

-all matter was composed of the four elements ~fire air, water, and earth -elements could be transformed into matter

-Philosopher’s Stone -turn ordinary metals into gold -discovered modern-day elements and compounds

-Father of the Atomic Theory -elements consist of atoms that cannot be divided -atoms of the same element are alike and have the same mass -atoms cannot be changed into another atom of a different element

-used a Cathode Ray Tube -discovered Electron -Plum Pudding Model

-Gold foil experiment -discovered nucleus -discovered proton

-Bohr model -electrons move in specific orbits around nucleus

-Electron Cloud model -densest area of the cloud is where electrons are

-discovered neutron