Atom History

What did Rutherford discover with this experiment?

• Matter is dense and very little empty space.

• Atoms have only negative charges

• Electrons are in the middle of an atom.

• The opposite of the rest of these options are true.

What is the model based of the Gold Foil experiment called?

• The Gold Foil model

• Ernest’s model

• The Rutherford model

• The Plum Pudding model

When was the Bohr model proposed?

• 1813

• 1913

• 1831

• 1931

Discovered the neutron.

• Thompson

• Chadwick

• Millikan

• Rutherford

Discovered the electron using cathode ray tube. His model of the atom was called the Plum Pudding Model of the atom.

• Bohr

• Millikan

• Thompson

• Rutherford

He determined that all atoms have a tiny dense nucleus containing protons and the atom was mainly empty space with the Gold Foil Experiment.

• Bohr

• Millikan

• Thompson

• Rutherford

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This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.

• Democritus's model of the atom

• The "Plum Pudding Model" of the atom

• The "Rutherford Model" of the atom

• The "Solar System Model" of the atom

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The first person to ever talk about an atom was

• Democritus

• Rutherford

• Dalton

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

• J.J. Tomson

• Ernest Rutherford

• John Dalton

• Democritus