Atoms And Elements

14 Questions | Total Attempts: 1797

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Atoms And Elements

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Questions and Answers
  • 1. 
    Which of the following is the smallest part of an element?
    • A. 

      Atom

    • B. 

      Molecule

    • C. 

      Ion

    • D. 

      Nucleus

  • 2. 
    Which of the following is an atom with an electric charge?
    • A. 

      Molecule

    • B. 

      Nucleus

    • C. 

      Electron

    • D. 

      Ion

  • 3. 
    A neutral atom that has 8 protons will have how many electrons?
    • A. 

      16

    • B. 

      8

    • C. 

      6

    • D. 

      None

  • 4. 
    If you know how many neutrons an atom has, you can tell what element it is. True or False?
    • A. 

      True

    • B. 

      False

  • 5. 
    An atom has an atomic number of 6. How many protons does it have?
    • A. 

      6

    • B. 

      12

    • C. 

      0

    • D. 

      There's no way to know.

  • 6. 
    An atom with an atomic number of 8 is most likely to have a mass number of what?
    • A. 

      8

    • B. 

      12

    • C. 

      16

    • D. 

      32

  • 7. 
    If an atom has 8 protons, what is the name of the element?
    • A. 

      Carbon

    • B. 

      Hydrogen

    • C. 

      Neon

    • D. 

      Oxygen

  • 8. 
    Fluorine has a total of 9 electrons. How many electrons are in its outer energy level?
    • A. 

      9

    • B. 

      2

    • C. 

      7

    • D. 

      1

  • 9. 
    If an atom loses 2 electrons, what will be the charge on its ion?
    • A. 

      +2

    • B. 

      -2

    • C. 

      0

    • D. 

      There's no way to tell.

  • 10. 
    In carbon dioxide, carbon and oxygen combine by sharing electrons.
    • A. 

      Carbon dioxide is an ionic compound.

    • B. 

      Carbon dioxide is a covalent compound.

    • C. 

      Carbon dioxide is not a compound.

    • D. 

      Carbon dioxide is a crystal.

  • 11. 
    Which two elements below are isotopes of each other?
    • A. 

      Hydrogen and helium

    • B. 

      Carbon and nitrogen

    • C. 

      Helium and neon

    • D. 

      Carbon-12 and carbon-14

  • 12. 
    If a compound catches fire, what part of the atom is involved?
    • A. 

      Nucleus only

    • B. 

      Protons only

    • C. 

      Electrons only

    • D. 

      Nucleus and electrons

  • 13. 
    What does it mean if an atom is radioactive?
    • A. 

      It forms a covalent bond.

    • B. 

      The nucleus splits apart.

    • C. 

      If forms an ion.

    • D. 

      It is useful in radio broadcasting.

  • 14. 
    Ionic bonds are formed whenever ...
    • A. 

      Atoms smash together.

    • B. 

      Electrons are being shared.

    • C. 

      Electrons are lost or gained.

    • D. 

      Atoms undergo nuclear decay.