Font size
WorksheetsAtomic Theory Timeline
Total questions: 23
Worksheet time: 12mins
Who first came up with the idea of atoms?
Democritus
Aristotle
Dalton
Thomson
Who came up with the theory that matter was made of
small, hard, indivisible particles that could not be
divided into smaller pieces?
Democritus
Aristotle
Chadwick
Bohr
Who came up with the theory that atoms are
uniform, solid spheres?
Dalton
Democritus
Thomson
Rutherford
What are the four parts of Dalton's Atomic Theory?
Atoms are Tiny, Indivisible particles
Atoms of one element are all the same
Atoms of different elements are different
Compounds form by combining atoms
Atoms of the opposite force attract each other
Who came up with the theory that Negative electrons
are spread through a positive sphere?
Thomson
Rutherford
Chadwick
Bohr
Who discovered the Electron?
Thomson
Rutherford
Schrodinger
Bohr
Who came up with the theory that the atom had a
Dense, positively charged Nucleus surrounded
by electrons?
Rutherford
Thomson
Schrodinger
Chadwick
Who discovered the Nucleus?
Rutherford
Thomson
Dalton
Democritus
Who came up with the theory that electrons travel in specific
circular orbits around the nucleus?
Bohr
Chadwick
Schrodinger
Dalton
Who discovered the Electron?
Bohr
Dalton
Schrodinger
Democritus
Who came up with the theory of a neutral particle is
present in the nucleus of the atom?
Chadwick
Bhor
Thomson
Schrodinger
Who discovered the Neutron?
Chadwick
Dalton
Aristotle
Democritus
Who came up with the theory that electrons
travel around in random orbits
Electrons travel so fast --> form electron cloud
Schrodinger
Chadwick
Rutherford
Dalton
Who discovered the Electron Cloud?
Schrodinger
Chadwick
Dalton
Aristotle
Who created this model?
Billiard Ball Model
Democritus
Dalton
Aristotle
Thomson
Who created this model?
Democritus
Dalton
Chadwick
Aristotle
Who created this model?
Plum Pudding Model
Thomson
Rutherford
Dalton
Chadwicl
Who used the Cathode Ray Tube?
Thomson
Rutherford
Schrodinger
Bohr
Who created this model?
Nuclear Model
Rutherford
Thomson
Chadwick
Dalton
Who used the Gold Foil Experiment?
Rutherford
Democritus
Schrodinger
Bohr
Who created this model?
Bohr Model
Bohr
Chadwick
Dalton
Thomson
Who created this model?
Neutron Model
Chadwick
Schrodinger
Rutherford
Dalton
Who created this model?
Electron Cloud
Schrodinger
Chadwick
Thomson
Rutherford
