Atoms Review

What Greek philosopher first spoke about the idea of an atom?

• Democritus
• Dalton
• Thompson
• Rutherford

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of one type of atom.  
• He discovered that atoms had nuclei. 
• He discovered that atoms could be divided into smaller parts. 

Which scientist discovered the electron?

• Bohr
• Rutherford
• Dalton
• Thomson

Which scientist discovered the nucleus?

• Bohr
• Rutherford
• Chadwick
• Thomson

This model of the atom described atoms as tiny spheres that could not be broken down into smaller pieces.

• Dalton's model of the atom
• The "Plum Pudding Model" of the atom
• The Nuclear Model
• The Bohr Model

Which model was developed using the gold foil experiment?

• Thomson Model
• Rutherford Model
• Cloud Model
• Bohr Model

Rutherford’s experiment determined that the nucleus of an atom is tiny, dense and  ______ charged. 

• positively
• negatively
• neutrally

Which subatomic particle was discovered by James Chadwick?

• proton
• neutron
• electron
• quark

Who performed the Gold Foil Experiment?

• J. J. Thomson
• Ernest Rutherford
• Neils Bohr
• John Dalton