Chem Ch 4 Quiz A

Who was the first to refer to matter as being made of individual, indivisible particles?

• Democritus

• Bohr

• Thomson

• Dalton

Which was the first model to include the different masses of different elements?

• Hund's model

• Bohr's model

• Rutherford's model

• Dalton's model

Thomson's cathode rays were made of

• protons

• electrons

• neutrons

• x-rays

Which of the following subatomic particles has the least mass?

• electron

• proton

• neutron

• nucleon

Who formulated a new atomic model because of discoveries made during an alpha particle experiment?

• Ernest Rutherford

• James Chadwick

• J. J. Thomson

• Niels Bohr

Who is credited with the discovery of the neutron?

• Niels Bohr

• James Chadwick

• Hans Geiger

• Ernest Rutherford

Who first identified and named the proton?

• Niels Bohr

• James Chadwick

• Ernest Rutherford

• J. J. Thomson

Whose work helped to explain line spectra?

• Niels Bohr

• Hans Geiger

• Ernest Rutherford

• Werner Heisenberg

Who conducted the experiment in which alpha particles were deflected by gold foil?

• James Chadwick

• Werner Heisenberg

• Wilhelm Roentgen

• Ernest Rutherford

Who proposed the "planetary" model of the atom?

• Niels Bohr

• John Dalton

• Albert Einstein

• Ernest Rutherford