🧪 Chemistry Quiz 3: Atomic Structure and Ions

🧪 Chemistry · Quiz 003

Move from the three basic subatomic particles to atomic identity, isotopes, and the calculation of ionic charge and mass number.

Learning goalUse proton, neutron, and electron counts to identify an element, isotope, and ion.

  • 5 questions
  • Core concepts
  • Explanations after finishing
Answered 0/5
FoundationWhich subatomic particle carries a negative electric charge?
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It is the particle most directly involved in ordinary chemical bonding.

UnderstandingWhat determines the atomic number of an element?
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Atomic number fixes the element’s identity.

ApplicationWhich statement correctly compares two isotopes of the same element?
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The element must keep the same atomic number.

InterpretationAn ion contains 12 protons and 10 electrons. What is its net charge?
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Compare positive proton charge with negative electron charge.

ConnectionA particle has 17 protons, 20 neutrons, and 18 electrons. Which description is correct?
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Use proton count for the element, protons plus neutrons for mass number, and proton–electron difference for charge.

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