Atomic Theory Timeline Song

Atomic Theory Timeline Song Words by Christy Johannesson To the tune of the “Alphabet Song”

Verse 1 • Dalton’s model was the “Billiard Ball” • Atoms are indivisible • Thomson used the Cathode Ray • Electrons are charged in a negative way • His model was “Plum Pudding” • Or a chocolate chip cookie

Verse 2 • Becquerel found by accident • Radiation from an atom went • Oil drops were used by Millikan • To find the mass and charge of an electron • While they changed the models none • They paved the way for others to come

Verse 3 • Rutherford experimented with Gold Foil • To find the nucleus he did toil • Its positive charge and tiny size • Showed that he was rather wise • Electrons moving ‘round the nucleus • Describes the “Nuclear Model” for us

Verse 4 • Bohr said electrons move in orbits round • In energy levels they can be found • This explains the reason behind • The bright-line spectrum that we find • “Planetary Model” it was called • But Bohr knew that it was flawed

Verse 5 • The orbital proposed by Schrödinger • Described most likely where electrons were • Quantum mechanics was the new game • “Electron Cloud” was the model’s name • Finally Chadwick found the neutron • But atomic theory still moves on

Atomic Theory Timeline Song