Models

This model added on to previous models by showing electrons existed at certain "energy levels". It is often called the Planetary Model.

• 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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NGSS.HS-PS1-1

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This model this model was the first to show a nucleus, consisting of protons and neutron.  Electrons surround the nucleus but are not shown in distinct energy levels. 

• The "Nuclear Model" by Rutherford

• The "Plum Pudding Model" of the atom by Thomson

• The "Quantum Mechanical Modell" of the atom by Heisenberg

• Democritus's model of the atom

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NGSS.HS-PS1-8

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 can you conclude from the fact that scientists continue to update the atomic model?

• New information about atoms continues to be discovered

• Old information about atoms is completely useless

• Scientists did not have any information about atoms until a few years ago

• Scientists still have no idea what atoms look like

In the model nicknamed "the solar system model" what are the electrons like?

• the sun

• the nucleus

• the planets

• the moon

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NGSS.MS-PS1-1

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Who proposed that electrons move around the nucleus in circular orbits?

• Dalton

• Thomson

• Rutherford

• Bohr

Which of the following has the atomic models in the correct Chronological order?

• Solid sphere, Plum pudding, Nuclear, Planetary, Quantum Mechanic/Electron Cloud

• Solid sphere, Plum pudding, Nuclear, Quantum Mechanic/Electron Cloud, Planetary,

• Plum pudding, Nuclear, Planetary, Quantum Mechanic/Electron Cloud,Solid sphere

• Nuclear, Planetary, Solid sphere, Quantum Mechanic/Electron Cloud,Plum pudding,

What is the mass number of this atom?

• 1

• 3

• 4

• 7

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NGSS.HS-PS1-8

How many valence electrons?

• 2

• 3

• 4

• 5

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the primary purpose of using models in scientific research?

• To simplify complex systems for better understanding

• To replace real-world experiments

• To prove scientific theories

• To eliminate the need for data collection

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NGSS.HS-ETS1-4