Atomic Theory

Which scientist saw the atom as a solid sphere?

• Dalton
• Thomson
• Rutherford
• Bohr

What subatomic particle has a negative charge and is found outside of the nucleus?

• Electron

• Proton

• Nucleus

• Neutron

Which subatomic particle has a positive charge and is found inside the nucleus?

• Electron

• Proton

• Neutron

• Nucleus

Which subatomic particle has a neutral charge and is found inside the nucleus?

• Electrons

• Protons

• Neutrons

• Nucleus

Who was the first person to study atomic theory?

• Dalton
• Democritus
• Chadwick
• Miller

Who proposed that the atom consists mostly of empty space?

• Bohr
• Dalton
• Rutherford
• Chadwick

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

• Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

• JJ Thomson, John Dalton, Ernest Rutherford, & Democritus

• Democritus, John Dalton, JJ Thomson, Ernest Rutherford.

• John Dalton, JJ Thomson, Democritus, & Ernest Rutherford

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? (pick two answers)

• Discovered the nucleus- did the gold foil experiment

• Used the cathode ray tube in his discovery

• Discovered the electron

• Discovered the neutron

Tags

NGSS.HS-PS1-8

What was James Chadwicks most notable discovery?

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

Tags

NGSS.HS-PS1-8