Atomic Theory

John Dalton stated:

• elements are made of atoms

• atoms of a given element are identical

• atoms cannot be subdivided, created, nor destroyed

• all of the above

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The scientist responsible for "discovering" the nucleus is:

• Bohr

• Rutherford

• Schroedinger

• Einstein

The nucleus of an atom can be described as:

• spacious and negatively charged

• dense and positively charged

• spacious and positively charged

• dense and negatively charged

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How did Rutherford discover the proton?

• Cathode tube ray experiment

• Gold Foil Experiment

• Planetary Model

• Plum Pudding Model

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What does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• DNA and RNA

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True or False: The majority of an atom is made up of empty space

• True

• False

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NGSS.MS-PS1-1

The word "atom" comes from a Greek word that means

• Invisible

• Indivisible

• Undivided

In an atom, 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

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NGSS.MS-PS1-1