Chemistry Test 1 review

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

• Atom is mostly empty space

• The nucleus is positively charged

• The atom has a small dense nucleus

• All answers are correct

Which part of an atom is used to identify it?

• number of protons

• number of neutrons

• number of electrons

Who proposed that the atom consists mostly of empty space?

• Bohr
• Dalton
• Rutherford
• Chadwick

What was J. J. Thomson's contribution to the atomic theory?

• Discovered the electron

• Discovered the nucleus -did the gold foil experiment

• Created a model of the atom with electrons moving around the nucleus in fixed orbits

• Discovered the neutron

What was Ernest Rutherford's contributions to atomic theory?

• Discovered the nucleus- did the gold foil experiment

• Used the wax experiment in his discovery

• Discovered the electron

• Discovered the neutron

What was James Chadwicks most notable discovery?

• The nucleus contains protons. 
• The nucleus contains neutrons.
• Electron are not fixed.
• Protons are positive.

Who's model is this?

• Thomson
• Rutherford
• Democritus
• Bohr

Which model of the atom proposed that atoms were positive spheres with negative electrons in them?

• Heliocentric Model
• Solid Sphere Model
• Plum Pudding Model
• Planetary Model

Discovered particles in the nucleus of atoms, neutrons

• Niels Bohr
• Ernest Rutherford
• J.J. Thomson
• James Chadwick

In the Thomson Model, he discovered the existence of what particle?

• Electrons
• Protons
• Neutrons
• Quarks