Atomic History and Structure

This model added on to previous models by showing electrons existed at certain "energy levels". However it does not accurately show what those levels look like.

• The "Bohr Model" of the atom
• The "Rutherford Model" of the atom
• The "Plumb Pudding Model" of the atom
• The "Quantum Mechanical Model" of the atom

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This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.

• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• Democritus's model of the atom
• The "Quantum Mechanical Model" of the atom

What does the nucleus of an atom contain?

• Electrons & Neutrons
• Protons & Neutrons
• Neutrinos & Positrons

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Who came up with this model?

• Dalton
• Thomson
• Rutherford
• Bohr

Discovered the nucleus

• Democritus
• Robert Millikan
• James Chadwick
• Ernest Rutherford

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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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Which model did J.J Thomson create?

• Planetary Model
• Plum Pudding Model
• Atomic Model
• Molecular Model

How did Rutherford discover the proton?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

If an atom has more protons that electrons, it will have a ___ charge?

• Positive
• Negative
• Neutral
• No charge, it would just disappear

If an atom has an equal amount of Protons and electrons, what will its’ charge be?

• Positive
• Negative
• Neutral
• Infinite