Module 2

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Author:
faulkner116
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171737
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Module 2
Updated:
2012-12-10 16:40:57
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Obj 10
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  1. Elements on the left side of the table are called
    Metals
  2. Elements on the right side of the table are
    Non-metals
  3. Where are the Noble gases located on the periodic table?
    Farthest right column
  4. What are metalloids
    Elements that share metal and non-metal properties.
  5. What metalloid atoms are only found in trace quantities in the human body?
    Boron

    Silicon
  6. What do we call an atom that does not combine with other atoms?
    Noble gases
  7. What are the three elementary particles?
    Electrons (e-) negative

    Protons (p+) positive

    Neutrons (n) neutral
  8. _________ are the tiniest elementary particles.
    Electrons
  9. Electrons
    They carry a charge, and are not trapped in a nucleus; they are responsible for the chemical prperties of the atom.
  10. Protons
    Carry a positive charge, equal and opposite to that of the electron.  They are sequestered in the nubleus and cannot participate in chemical reactions.
  11. Neutrons
    They have no charge, but like protons, have mass.
  12. ________  ___________ is the basis for nuclear weapons, nuclear reactors, and nuclear medicine.
    Nuclear Fission
  13. Prostate beams are used to treat
    prostate, brain and lung cancers.
  14. PET
    positron-emission tomography
  15. Which particle is often represented as a "planet" orbiting the "sun" (atomic nucleus)?
    Electrons
  16. Which particles for the nucleus?
    • Protons
    • Neutrons
  17. Mass of proton
    1.007 Daltons (atomic mass unit)
  18. Mass of neutron
    1.009 Daltons (atomic mass unit)
  19. A neutral atom of a particular element has an equal number of ________ and ________
    electrons and protons (so the + and - charges cancel out)
  20. The number of _______ can vary.
    Neutrons.  This variation changes the atom's mass but not its chemical properties. Atoms which vary in the number of neutrons are called isotopes.
  21. Atomic number is what
    number of protons
  22. Mass number is what
    Sum of protons and neutrons
  23. Atomic mass (weight) is what
    Average mass of all naturally-occuring isotopes of an element.
  24. What atom commonly used in neclear medicine to study bone?
    Ca 47 (20 protons + 27 neutrons)... Calcium
  25. What atom commonly used in nuclear medicine to destroy thyroid tissue?
    I 131 (53 protons + 78 neutrons)... Iodine
  26. What atom commonly used in nuclear medicine for respiratory studies?
    Xe 133 (54 protons + 79 neutrons).... Xenon
  27. What is the element that does not occur on Earth
    Tc 43  (43 protons + 56 neutrons) ... Technetium
  28. You can't touch the __________ electron shells
    Inner (electrons closely associated with the nucleus)
  29. Electrons __________ associated with the nucleus are more free to __________ and ________.
    loosely; come; go
  30. The _______ ________ determines the chemical properties of the element.
    outer shell
  31. Shells like to be ________, as in the noble gasses
    full

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