Atomic Theory and Structure

Who stated that atoms cannot be divided?

• Shrodinger

• Dalton

• Thomson

• Bohr

Whose model shows that electrons move in definite orbits around the nucleus.

• Thomson

• Rutherford

• Bohr

• Democritus

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

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

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NGSS.MS-PS1-1

Place the following scientists in order, from earliest to latest: 
Rutherford, Dalton, Bohr, Thomson

• Dalton, Rutherford, Bohr, Thomson
• Thomson, Dalton, Rutherford, Bohr
• Dalton, Thomson, Rutherford, Bohr
• Bohr, Dalton, Rutherford, Thomson

Tags

NGSS.MS-PS1-1

Rutherford's gold foil experiment provided evidence that...(choose 2)

• negative and positive charges are spread evenly throughout the atom.

• the atom is mostly empty space

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

Who came up with the model of an atom pictured?

• J.J. Thompson
• Ernest Rutherford
• Neils Bohr
• James Chadwick

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NGSS.MS-PS1-1

Whose model is this?

• Millikan

• Rutherford

• Thomson

• Bohr

How did each model of the atom help to develop the atomic theory? 

• Each model provided opinions that were added.
• Each model showed different properties of the same structure. 
• Each model showed new particles that had been discovered.
• Each model built upon the other to show new particles or properties of previously discovered particles. 

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NGSS.MS-PS1-1

J.J. Thomson built on Dalton's theory by providing evidence that an atom...

• is the smallest particle of matter

• contains negatively charged particles

• has an overall negative charge

• has an overall positive charge

Isotopes are elements with a different amount of

• protons
• neutrons
• electrons
• atoms

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NGSS.HS-PS1-8