Fall Sem Chem Final Pt.2

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gerardcb
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59733
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Fall Sem Chem Final Pt.2
Updated:
2011-01-14 01:10:49
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chemistry
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chemistry
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  1. ___________ is an atom's principal quantum number
    n
  2. Photoelectric effect depends on ___________
    the energy of photon (frequency)
  3. Principal energy levels of an atom are _________
    n - 1,2,3
  4. Aufbau principle states?
    electron configuration?
  5. Relationship that shows periodic pattern when elements are arranged by increasing atomic number is ____________
    periodic trends
  6. Elements were arranged in order of increasing atomic mass by
  7. Periods are
    horizontal
  8. There are ___ periods
    7
  9. Group 1A are the
    Alkali metals
  10. Group 2A are the
    Alkaline earth metals
  11. Group 7A are the
    Halogens
  12. Group 8A are the
    Noble gases
  13. Electrons responsible for atom's behavior are ________ e-
    valence
  14. Moving down a group, atomic radius _________
    increases
  15. Electronegativity is __________________
    tendency of an attracting electrons
  16. _______________ discovered law of conservation of matter
    lavosier
  17. A substance that cannot be separated into simpler substances is a(n) ________
    Mixture
  18. A ______________ contains 2 or more elements combined in a fixed proportion
    compound
  19. ______ ______ consists of one or more letters.
    chemical symbol
  20. ___________ is simply a change of state.
    burning
  21. Density is an example of a ________________property
    physical
  22. Ionization energy is energy __________________________________
    required to remove one of the atoms e-
  23. Most reactive elements are found in the ___ block
    S
  24. Alkali metals form _____ charged ions
    +
  25. All alkali metals
    lithium, sodium, potassium
  26. A mixture of metals is an
    alloy
  27. ____________ energy is carried out by objects in motion.
    kinetic
  28. A calorie is
    energy burned up
  29. Law of conservation of energy states
    energy is neither created nor destroyed
  30. Volume is measured with a
    graduated cylinder
  31. 24.5 has __ significant digits
    3
  32. 0.24 has __ significant digits
    2
  33. Chemistry is the study of
    all substances and the changes they undergo
  34. Density is
    mass of unit by volume
  35. X-axis is the ___________ variable and the Y-axis is the ___________ variable
    independent, dependent
  36. Atom is
    smallest part of an element it retains

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