The Bohr Model

For a given element, the atomic number indicates the number of _____

• protons in the nucleus
• neutron in the nucleus
• electrons in the atom
• nucleons in the atom

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NGSS.MS-PS1-1

If an atom contains exactly 79 protons, then it's an atom of _____

• lithium
• gold
• nitrogen
• carbon

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NGSS.MS-PS1-1

For an atom to be electrically neutral, it must contain the same number of _____

• protons and neutrons
• neutrons and electrons
• protons and electrons
• nucleons and electrons

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NGSS.MS-PS1-1

Different versions of an element, with differing numbers of neutrons, are called _____

• isosceles
• isomers
• isotopes
• isicless

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NGSS.HS-PS1-8

The sum of the number of protons and the number of neutrons is called the _____

• atomic number
• mass number
• isotope number
• average weight

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NGSS.MS-PS1-1

In the Bohr model of the atom, what is the maximum number of electrons in the first shell?

• 1
• 2
• 6
• 8

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NGSS.MS-PS1-1

Which subatomic particle has no electric charge?

• the proton
• the neutron
• the electron
• the photon

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NGSS.HS-PS1-3

What is the mass number of this atom?

• 1
• 3
• 4
• 7

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NGSS.MS-PS1-1

What is the atomic number of this atom?

• 2
• 4
• 6
• none of the above

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NGSS.MS-PS1-1

• 2
• 3
• 5

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NGSS.MS-PS1-1