Atomic Theory- Scientist Timeline: Question Preview (ID: 16456)


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Created the atomic theory
a) Dalton b) Rutherford c) Chadwick d) Democritus
Believed that atoms of a given element are identical
a) Dalton b) Thomson c) Rutherford d) Chadwick
Discovered that the atom is mostly empty space
a) Rutherford b) Dalton c) Chadwick d) Democritus
Hypothesized that the atom was a tiny hard sphere
a) Chadwick b) Dalton c) Rutherford d) Thomson
Discovered the neutron
a) Chadwick b) Dalton c) Rutherford d) Heisenberg
Uncertainty principle (a particle's position, energy and time can never be precisely known)
a) Chadwick b) Dalton c) Bohr d) Heisenberg
Determined that the properties of elements are periodic (or in trends)
a) Bohr b) Mendeleev c) Heisenberg d) Chadwick
Found the missing mass of the atom's nucleus
a) Democritus b) Mendeleev c) Chadwick d) Dalton
Greek philosopher
a) Democritus b) Chadwick c) Dalton d) Thomson
Created the first periodic table.
a) Rutherford b) Bohr c) Mendeleev d) Dalton
Believed that the universe was made of tiny uncuttable particles
a) Democritus b) Mendeleev c) Chadwick d) Dalton
Who discovered that the proton had a positive charge?
a) Chadwick b) Bohr c) Dalton d) Rutherford
Who did the gold foil experiment?
a) Democritus b) Mendeleev c) Rutherford d) Chadwick
Who created a model of the atom with electrons moving around the nucleus in fixed orbits?
a) Thomson b) Bohr c) Rutherford d) Democritus
Who discovered the electron?
a) Thomson b) Bohr c) Rutherford d) Goldstein
Use the cathode ray tube in his discovery
a) Dalton b) Mendeleev c) Heisenberg d) Thomson
Created the plum pudding model of the atom.
a) Thomson b) Dalton c) Mendeleev d) Chadwick
Worked with the Quantum Theory
a) Heisenberg b) Thomson c) Daltong d) Democritus
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