History of the Atom

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. 

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NGSS.MS-PS1-1

Which scientist discovered the electron?

• Bohr
• Rutherford
• Dalton
• Thomson

Which model was developed using the gold foil experiment?

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

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

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

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

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Which scientist discovered the nucleus?

• Bohr
• Rutherford
• Chadwick
• Thomson

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

• Democritus
• Dalton
• Thompson
• Rutherford

Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?

• Democritus
• Niels Bohr
• Ernest Rutherford
• Chadwick

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NGSS.MS-PS1-1

Who is credited with developing the atomic theory?  (Sometimes called the father of atomic theory)

• John Dalton
• J. J. Thomson
• Earnest Rutherford
• Niels Bohr

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

• positively
• negatively
• neutrally