CHEMISTRY Periodic Table

Card Set Information

Author:
Natalie
ID:
11729
Filename:
CHEMISTRY Periodic Table
Updated:
2010-03-23 14:37:15
Tags:
periodic table
Folders:

Description:
Periodic Table
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Natalie on FreezingBlue Flashcards. What would you like to do?


  1. Researched triads that had similar chemical properties
    Dobereiner
  2. Physical properties showed a trend that varied in an orderly way according to their atomic mass
    Triads
  3. Russian chemist who organized known elements into a periodic table and recognized that chemical and physical properties varied in an orderly way when elements arranged by increasing atomic mass
    Dmitri Mendeleev
  4. What did Mendeleev predict?
    • Properties of yet undiscovered elements (based on trends in columns and rows)
    • *Predictions were very accurate
  5. How is the modern periodic table arranged?
    By atomic number
  6. A horizontal row
    period
  7. A vertical column
    Family or Group
  8. Divides metals from nonmetals
    Stair steps
  9. 8 valence electrons - Element is unreactive
    Stable octet
  10. Loses electrons when reacting to form a stable octet
    Has 1-3 valence electrons
    Found left of stair steps
    metal
  11. Gains electrons when reacting to form a stable octet
    Typically has 5-7 valence electrons
    Found right of the stair steps (not including 8A)
    Nonmetals
  12. Can gain or lose electrons when reacting to form a stable octet
    Has 3-5 valence electrons
    Found along the stair steps
    metalloid
  13. Do not gain or lose electrons (don't react)
    Has 8 (or 2) electrons
    Found in rightmost column
    Noble gases
  14. Where are the groups and what are their names on the periodic table?
  15. A base
    Alkali / Alkaline
  16. Salt former
    Halogen
  17. Oxygen family
    Chalcogen
  18. What are family characteristics?
    • All have the same number of valence electrons
    • Similar chemical properties
    • Trends of density, boiling point, melting point
    • Trend of increasing or decreasing reactivity
  19. Properties of elements tend to repeat in a pattern when the elements are arranged in order of increasing atomic number
    Periodicity (Periodic Law)
  20. What are periodic properties?
    • Atomic size
    • Metallic nature
    • Valence electrons
    • Chemical reactivity
  21. What are the units for atom size?
    • Angstroms = 1x10-10m
    • Picometers = 1x10-12m
  22. Energy needed to remove the outermost valence electron from and atom in the gaseous phase
    Ionization energy
  23. How does ionization energy increase?
    • From left to right
    • From bottom to top
  24. What are reactivity trends?
    • Metals become more reactive down the group
    • Nonmetals become less reactive down the group

What would you like to do?

Home > Flashcards > Print Preview