History of the Atom

Rutherford and his students did experiments that showed

• quark

• nucleus

• proton

• electron

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NGSS.MS-PS1-1

Bohr discovered that electrons are located in

• the nucleus

• inside protons

• electron cloud

• circular orbits around the nucleus

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

• Atoms
• Parts
• Molecules
• Hydrogen

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NGSS.MS-PS1-1

Who was the Greek philosopher who called the smallest particle of matter an "atom"?

• Democritus

• Aristotle

• J.J Thompson

• Einstein

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively charged particles
• has an overall negative charge
• has an overall positive charge

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NGSS.MS-PS1-1

Who performed the Gold Foil Experiment?

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

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NGSS.HS-PS1-8

Which model is this?

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

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NGSS.MS-PS1-1

Whose atomic model is this

• Bohr
• Democritus
• Rutherford
• Thomson