Atomic Theory

Front

Atoms are small, hard, indivisible particles.

Back

Democritus

Front

First to publish atomic theory?

Back

John Dalton

Front

Parts of Dalton's theory:

Back

All substances are made of atoms, Atoms join to form new substances, Atoms of different elements are different.

Front

First to describe matter as 'atoms'

Back

Democritus

Front

Scientist who added negatively-charged particles to the atom model.

Back

J. J. Thomson

Front

Model of an atom after which experiment?

Back

Gold Foil Experiment

Front

Model of atom after which experiment?

Back

Cathode Ray Tube Experiment

Front

Thomson’s ________

Back

cathode ray tube experiment

Front

Belief in atom as a solid sphere.

Back

Democritus and Dalton

Front

Path of the cathode ray is explained by:

Back

Deflected from negative electrode, attracted to positive electrode.