Elements
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Questions and Answers

Which of the following best describes an element?

  • A substance that is chemically linked to other substances
  • A substance that can be broken down into simpler substances
  • A substance that cannot be broken down into simpler substances (correct)
  • A substance that is artificially produced

    • What is the atomic number of an atom?

  • The number of neutrons in an atom
  • The total number of particles in an atom
  • The number of protons in an atom (correct)
  • The number of electrons in an atom

    • What is the mass of an electron?

  • 1 atomic mass unit (1u)
  • 1/1840 atomic mass unit (1/1840u) (correct)
  • Varies depending on the atom
  • Electrically neutral

    • Which of the following correctly describes a compound?

    <p>A substance that is chemically linked to other substances</p> Signup and view all the answers

    Which particles form the central nucleus of an atom?

    <p>Protons and neutrons</p> Signup and view all the answers

    Which of the following statements about atoms is correct?

    <p>Atoms consist of protons, neutrons, and electrons.</p> Signup and view all the answers

    What is the maximum number of electrons that can be present in the N shell of an atom?

    <p>32</p> Signup and view all the answers

    Which of the following particles has a positive electrical charge?

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

    Which of the following best describes an element?

    <p>A substance that cannot be broken down into simpler substances by ordinary chemical processes.</p> Signup and view all the answers

    What determines the chemical properties of an atom?

    <p>Atomic number</p> Signup and view all the answers

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