Development of Atomic Model

Who was the ancient Greek philosopher who first proposed the idea of atoms?

• Democritus

• Aristotle

• J.J. Thompson

• John Dalton

Which Quaker teacher challenged Aristotelian theory and showed that common substances always broke down into the same elements?

• Democritus

• John Dalton

• J.J. Thompson

• Ernest Rutherford

Who discovered the electron in 1897 and won a Nobel Prize for it?

• John Dalton

• J.J. Thompson

• Ernest Rutherford

• Niels Bohr

Who is known as the father of the nuclear age and conducted the gold foil experiment to investigate atoms?

• Ernest Rutherford

• J.J. Thompson

• Niels Bohr

• Werner Heisenberg

Who expanded on Rutherford's nuclear model and proposed that electrons orbit the nucleus at fixed energies and distances?

• Ernest Rutherford

• Niels Bohr

• J.J. Thompson

• Werner Heisenberg

Who showed that electrons simultaneously behaved like waves and formulated the famous uncertainty principle?

• Niels Bohr

• Ernest Rutherford

• J.J. Thompson

• Werner Heisenberg

What did Werner Heisenberg show was impossible to determine about electrons as they moved around an atom?

• Exact position and speed

• Exact speed and energy level

• Speed and energy level

• Exact position and energy level

What theory gave rise to the current quantum model of the atom?

• Bohr's planetary model

• Heisenberg's uncertainty principle

• Thomson's chocolate chip cookie model

• Rutherford's nuclear model

What do electrons absorb or release as they shift between energy levels, resulting in the marvelous colors we see?

• Light

• Sound

• Electricity

• Heat

Who turned out to have been right all along about the idea of atoms, according to the historical account?

• Aristotle

• J.J. Thompson

• Democritus

• John Dalton