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16.2 - Masses of Atoms(25Pts.)

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  • 1. Drag and Drop
    1.5 minutes
    2 pts
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    The element hydrogen has three naturally occurring isotopes.

    Which of the following describes the relationship of these isotopes?

    Isotopes have (a)   mass numbers, but (b)   number of protons.

    different

    the same

    tags
    HS-PS1-1
  • 2. Math Response
    2 minutes
    1 pt
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    The atomic number of yttrium is 39. The atomic mass of one of its isotopes is 89.

    How many neutrons are in an atom of this isotope of yttrium?

    tags
    HS-PS1-1
  • 3. Categorize
    3 minutes
    2 pts

    Organize these options into the right isotopes

      (a) Carbon - 12 , (b) Carbon - 14
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    6 Protons in the Nucleus

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    6 Protons in the Nucleus

    tags
    HS-PS1-1
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