Atomic theory mine project Caleb C by Caleb Cunningham

democritius

28ccunningham — 2025-09-12 15:40:44 UTC

Democritus proposed that all things are composed of the atomos or thev fundamental, indivisible particles, atoms; atoms cannot be destroyed; atoms are separated by the void or empty space, atoms are in constant motion, and undergo constant change through the void.

Aristotle

28ccunningham — 2025-09-12 15:42:50 UTC

Aristotle did not believe that matter was made of atoms, but rather of four elements - earth, fire, water, and air He believed all substances were made of varying amounts of these elements

John Dalton

28ccunningham — 2025-09-12 15:44:56 UTC

He believed all matter was comprised of indivisible and indestructible atoms with distinct masses and properties

J.J Thomson

28ccunningham — 2025-09-12 15:47:27 UTC

sorta like Dalton he thought alike all atoms contain tiny negatively charged subatomic particles or electrons

Ernest Rutherford

28ccunningham — 2025-09-12 15:48:50 UTC

He postulated the nuclear structure of the atom, discovered alpha and beta rays and proposed the laws of radioactive decay

Niels Bohr

28ccunningham — 2025-09-16 15:26:39 UTC

The Bohr model postulates that electrons orbit the nucleus at fixed energy levels.

Erwin Schrödinger & Werner Heisenberg

28ccunningham — 2025-09-16 15:28:58 UTC

the probabilistic nature of the electron and applying it to the model of the atom.

James Chadwick

28ccunningham — 2025-09-16 15:32:14 UTC

James Chadwick's contribution to the atomic model was his discovery of the neutron.