Chemistry Chapter 3

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Chemistry Chapter 3
2010-09-16 16:08:55
electronic structure periodic law

Chemistry Chapter 3
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  1. What does the periodic table help us do?
    helps us to understand the behavior, reactions, and properties of the element; gives the Atomic number
  2. Information found on the periodic table
    atomic number, name of element, atomic mass, and elemental symbol
  3. Some properties of metals
    • Lustrous, malleable and ductile
    • conductors of heat and electricity
    • all are solids at room temp. except for Mercury
    • Will lose electrons when reaction w/ non-metals
  4. Some properties of non- metals
    • they are poor conductors of heat and electricity
    • many exist as diatomic molecules
    • they will gain an electron when reacting w/ metals but will share when reacting w/ other non- metals
    • all states phsyical states are observed at room temp.
  5. Metalloids
    • may act as a metal or nonmetal
    • depend on what they want to react w/
    • these elements have variable chemical properties
    • they act lilke non- metals when they react w/ metals
    • they act like metals when they react w/ non metals
    • these materials also have semi- conduction properties
  6. How are representative, transition, and inner- transition elements determined?
    elements are classified according to the type of distingushing electron (the last electron that enters the outer most shell) they contain
  7. Groups go ______ on the periodic table
    up and down
  8. Periods go ______ on the periodic table
    side to side
  9. Common names for group 1
    alkali metals; sodium family
  10. Common names for group 2
    alkali earth metals; calcium family
  11. Common names for Group 7
    Halogens; salt producers
  12. Common name for group 8
    Noble Gases; have 8 electrons in outer shell
  13. electronic arrangement
    • we can view atoms as being a series of layers with only a certain # of electrons on each layer
    • Bohr came up with the model
    • start close to nucleus and go outward
  14. Valence electron
    this is where most chemical reactions occur
  15. Inner electrons
    not much happens here under normal conditions
  16. What are the names of the 4 subshells?
    s, p, d, and f