Isotope Knowledge
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Questions and Answers

Which of the following statements about isotopes is correct?

  • Isotopes are atoms with the same number of neutrons but different number of protons.
  • Isotopes are atoms with the same number of electrons but different number of neutrons.
  • Isotopes are atoms with the same number of protons but different number of neutrons. (correct)
  • Isotopes are atoms with the same number of protons but different number of electrons.
  • What is the significance of isotopes in chemistry?

  • Isotopes have the same chemical properties but different physical properties.
  • Isotopes have both the same chemical and physical properties.
  • Isotopes have neither the same chemical nor physical properties.
  • Isotopes have the same physical properties but different chemical properties. (correct)
  • How are isotopes of an element represented?

  • Isotopes are represented by the same chemical symbol followed by a different atomic mass. (correct)
  • Isotopes are represented by the same chemical symbol followed by a different number of protons.
  • Isotopes are represented by the same chemical symbol followed by a different number of electrons.
  • Isotopes are represented by the same chemical symbol followed by a different number of neutrons.
  • Which of the following is NOT a phase change?

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

    What is the process called when a gas changes directly into a solid without going through the liquid phase?

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

    Which phase change involves a substance changing from a solid directly into a gas without becoming a liquid first?

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

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