Rutherford's Gold Foil Experiment Quiz

Who performed the gold foil experiment that led to the discovery of the atomic nucleus?

• James Chadwick

• Niels Bohr

• Ernest Rutherford

• JJ Thompson

What was the main hypothesis of the plum pudding model?

• Atoms are mostly empty space.

• Electrons are embedded in a sphere of positive charge.

• Electrons orbit the nucleus in fixed paths.

• Atoms are indivisible particles.

What was the purpose of the detector in Rutherford's experiment?

• To detect deflected alpha particles

• To measure the mass of the atom

• To emit alpha particles

• To provide a source of light

What is the charge of an alpha particle used in Rutherford's experiment?

• Positive 1

• Neutral

• Positive 2

• Negative

What unexpected result did Rutherford observe in his experiment?

• All alpha particles passed through the foil without deflection.

• Most alpha particles were deflected at large angles.

• Some alpha particles were deflected and some bounced back.

• Alpha particles were absorbed by the foil.

What did Rutherford conclude about the structure of the atom from his experiment?

• Atoms are solid spheres.

• Atoms have a dense, positively charged nucleus.

• Electrons are the heaviest part of the atom.

• Atoms are made entirely of empty space.

According to Rutherford's nuclear theory, where is most of an atom's mass located?

• In the electron cloud

• In the nucleus

• In the outer shell

• Evenly distributed throughout the atom

What does Rutherford's nuclear theory say about the volume of an atom?

• Most of an atom's volume is filled with protons.

• Most of an atom's volume is filled with neutrons.

• Most of an atom's volume is occupied by the nucleus.

• Most of an atom's volume is empty space.

What particle did James Chadwick discover that completed the atomic model?

• Proton

• Electron

• Neutron

• Photon

Why was Rutherford's nuclear theory considered incomplete initially?

• It did not include the neutron.

• It did not explain the atom's stability.

• It did not describe the electron's orbit.

• It did not account for the electron's charge.