Atomic Structure Quiz
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Questions and Answers

What part of the atom has the most mass?

  • Protons
  • Electrons
  • Nucleus
  • Neutrons (correct)
  • What part of the atom takes up the most room?

  • Electrons (correct)
  • Protons
  • Nucleus
  • Neutrons
  • What is equal in a neutral atom?

  • Nucleus and electrons
  • Electrons and neutrons
  • Protons and electrons (correct)
  • Protons and neutrons
  • What changes when the Z number goes from $Z = 6$ to $Z = 7$?

    <p>Number of protons</p> Signup and view all the answers

    What is the mass number for an element that has 66 electrons, 66 protons and 96 neutrons?

    <p>162</p> Signup and view all the answers

    In mass-based stoichiometry problems, why are amounts of substances in the laboratory most often measured by mass?

    <p>Because mass is easier to measure accurately than moles</p> Signup and view all the answers

    When doing a large construction project, why might one prefer to buy nails by weight rather than counting them?

    <p>To avoid the tedious task of counting out several hundred nails</p> Signup and view all the answers

    What is the primary purpose of using mole-mass calculations in combination with mole ratios in stoichiometry?

    <p>To convert between mass and moles of substances</p> Signup and view all the answers

    What role does the mole ratio play in all stoichiometry calculations?

    <p>It establishes the relationship between reactants and products in a chemical reaction</p> Signup and view all the answers

    Why do we need to use mole-mass calculations in mass-based stoichiometry problems?

    <p>To convert between mass and moles of substances</p> Signup and view all the answers

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