Discover the World of Atoms
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Questions and Answers

What distinguishes one chemical element from another?

  • The size of their atoms
  • The number of electrons in their atoms
  • The number of neutrons in their atoms
  • The number of protons in their atoms (correct)

    • Which particle(s) make up the nucleus of an atom?

  • Protons, neutrons, and electrons
  • Neutrons and electrons
  • Protons and neutrons (correct)
  • Protons and electrons

    • What defines the isotope of an element?

  • The number of electrons
  • The size of the atom
  • The number of neutrons (correct)
  • The number of protons

    • Why can't humans see atoms with conventional microscopes?

    <p>Atoms are too small</p> Signup and view all the answers

    Which element has an atomic number of 11?

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

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