Chemical Elements and Unique Properties Quiz
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Questions and Answers

What is the atomic number of carbon?

  • 8
  • 4
  • 12
  • 6 (correct)

    • What makes an element unique?

  • The arrangement of protons and neutrons
  • The combination of protons and electrons
  • The number of protons in its nucleus (correct)
  • The number of electrons in its nucleus

    • How many naturally occurring elements are there on earth?

  • 118
  • 24
  • 6
  • 91 (correct)

    • Which element has an atomic number of 8?

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

    What is the main criterion used to identify each element?

    <p>The number of protons in its nucleus</p> Signup and view all the answers

    Which two elements are the simplest chemically unique components of water?

    <p>Hydrogen and oxygen</p> Signup and view all the answers

    How many naturally occurring elements play normal physiological roles in humans?

    <p>24</p> Signup and view all the answers

    Which two-letter symbol represents iron on the periodic table?

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

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