REVIEW: History and Development of Atomic Theory

Who proposed that all matter consists of tiny, indivisible particles called atomos?

• Democritus

• Aristotle

• John Dalton

• Antoine Lavoisier

Tags

NGSS.HS-PS1-7

What is the origin of the word "atom"?

• From the Greek word "atomos"

• From the Latin word "atomus"

• From the French word "atome"

• From the English word "atom"

Which philosopher's atomic ideas were dismissed for centuries by more influential thinkers?

• Democritus

• John Dalton

• Eugene Goldstein

• Ernest Rutherford

What did canal rays discovered by Goldstein help identify?

• The proton

• The neutron

• The electron

• The nucleus

What did Thomson's discovery of the electron disprove?

• Dalton's idea of the atom as indivisible

• Lavoisier's Law of Conservation of Mass

• Goldstein's canal rays

• Rutherford's planetary model

What model did Thomson propose after discovering the electron?

• Plum pudding model

• Planetary model

• Bohr model

• Quantum model

In Thomson's model, where were the negative electrons embedded?

• In a sphere of positive charge

• In the nucleus

• In the outer shell

• In the proton

Who conducted the famous oil drop experiment?

• Robert A. Millikan

• Joseph John Thomson

• Eugene Goldstein

• Ernest Rutherford

What did Millikan's oil drop experiment help determine?

• The charge of a single electron

• The mass of a proton

• The structure of the nucleus

• The number of neutrons

Why was Millikan's experiment important?

• It helped calculate the electron's mass

• It discovered the neutron

• It proved atoms are indivisible

• It disproved the planetary model