Atomic Theory, Atomic Structure, & Isotopes

Who is known as the father of modern atomic theory?

• Niels Bohr

• John Dalton

• Ernest Rutherford

• J.J. Thomson

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DOK Level 1: Recall

Which subatomic particle has a positive charge?

• Electron

• Neutron

• Proton

• Positron

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DOK Level 1: Recall

What is the main difference between isotopes of the same element?

• Number of protons

• Number of electrons

• Number of neutrons

• Atomic number

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DOK Level 1: Recall

Calculate the number of neutrons in an isotope of carbon with an atomic number of 6 and a mass number of 14.

• 6

• 8

• 14

• 20

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DOK Level 2: Skill/Concept

Which scientist proposed the plum pudding model of the atom?

• Niels Bohr

• John Dalton

• Ernest Rutherford

• J.J. Thomson

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DOK Level 1: Recall

What is the charge of an ion with 11 protons and 10 electrons?

• +1

• -1

• 0

• +2

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DOK Level 2: Skill/Concept

Which subatomic particle is found in the nucleus and has no charge?

• Electron

• Neutron

• Proton

• Positron

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DOK Level 1: Recall

Identify the isotope notation for an element with 15 protons and 16 neutrons.

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DOK Level 2: Skill/Concept

Who discovered the electron?

• Niels Bohr

• John Dalton

• Ernest Rutherford

• J.J. Thomson

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DOK Level 1: Recall

What is the atomic number of an element with 17 protons?

• 16

• 17

• 18

• 19

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DOK Level 1: Recall