Democritus
Abdera, Greece
What was the birthplace of Democritus?
Cumbria, UK
What was the birthplace of Dalton?
1897
When did Thomson make his discovery?
1911
When was Rutherford's discovery?
Father of the modern atomic theory
What is Niels Bohr accredited for?
The idea that atoms are indivisible
What are Democritus' contributions?
Hydrogen gas
What did Dalton use that led to his discoveries?
Cathode ray tube
What did Thomson use to confirm his theory?
The gold-foil experiment
What led to Rutherford's discovery?
1913
When was Bohr's theory completed?
400 B.C.E
When was Democritus' theory completed?
1803
When did Dalton publish his theories?
Idea disproved by Thomson's discovery of subatomic particles
What was the theory of indivisible atoms?
The center of an atom
What is a nucleus?
Taught by recognized scientist
Who is Rutherford?
Pre-socritism
Atomic weight and the idea that atoms were small ball-like objects, indivisible, and the smallest unit of matter.
What were Dalton's contributions?
Electrons
What is Thomson's discovery?
Atoms orbit around the nucleus
What was Rutherford's discovery?
Hydrogen atoms
What is the foundation for Bohr's discovery?
Aristotle and Plato
Who were Democritus' rivals?
Manchester Literary and Philosophical Society
Where did Dalton publish his theories?
Plum Pudding model without protons or neutrons
What was the name for Thomson's model?
The concept that electrons orbit in certain directions based off energy
What is the modern atomic theory?
Unable to explain chemical behavior of atoms
What is the flaw of Bohr's model?