Download A History of the Atomic Structure

A History of the Atomic Structure
DEMOCRITUS = __________________________________________________
Greek word means “cannot be divided”
DALTON = _______________________________________________________
Atoms were tiny particles
Atom is a solid sphere
THOMSON = _____________________________________________________
Atom has negatively charged particles called electrons scattered
throughout
AKA Plum Pudding Model
RUTHERFORD = __________________________________________________
Atom is mostly empty space with a dense center called the nucleus
BOHR = _________________________________________________________
Solar System Model
Electrons travel in fixed paths known as energy levels in a specific area
outside the nucleus
(FYI-Gob Stoppers change colors as outside layers dissolve. Each layer is
a different color)
ELECTRON CLOUD THEORY = _____________________________________
Electrons move randomly and rapidly in energy levels and are in a
predictable space scattered outside the nucleus but no exact location can
be identified
(FYI-The Ferrero Rocher Chocolate has a hard center (nucleus) with small
pieces of hazelnut in chocolate surrounding the center)