History of the Atomic Model

Flashcards about the history of the atomic model.

John Dalton

Born in 1903, Summarized atomic theory: All elements are made of atoms; atoms of the same element are identical; atoms cannot be created, destroyed, or split.

Solid Sphere Model

Atomic model proposed by John Dalton where atoms are solid and indivisible spheres.

Neils Bohr

Born in 1913, created the Bohr model, and was a theoretical physicist.

Planetary Model

Atomic model proposed by Neils Bohr, depicting electrons orbiting the nucleus in fixed paths.

Joseph John Thompson

Discovered electrons in 1897 and proposed the Plum Pudding Model.

Plum Pudding Model

Atomic model proposed by J.J. Thompson, depicting atoms as balls of positive matter with negative electrons embedded within.

Ernest Rutherford

Discovered protons in 1911 and proposed the nuclear model of the atom.

Gold Foil Experiment

Experiment conducted by Rutherford that led to the conclusion that atoms are mostly space with a small, positive nucleus.

Nuclear Model

Atomic model with a small, dense, positively charged nucleus surrounded by mostly empty space.