Chemistry

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Author:
cj8
ID:
290249
Filename:
Chemistry
Updated:
2014-11-30 09:09:05
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chemistry
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chapter 6
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  1. How did chemists begin to organize the known elements
    by using the properties of elements to sort them into groups
  2. How did Mendeleev organize his periodic table
    by atomic mass
  3. how is the modern periodic table organized
    atomic number
  4. when elements are arranged in order of increasing atomic number there is a periodic repetition of their physical and chemical properties
    periodic law
  5. what are 3 broad classes of elements
    metals, nonmetals, metalloids
  6. across a period, do properties of elements get less or more metallic
    less
  7. generally good conductors of heat and electric current
    metal
  8. properties of metal
    ductile, malleable
  9. poor conductors of heat and electric current
    nonmetal
  10. generally has properties that are similar to those of metals and nonmetals
    metalloid
  11. where are the metals found on the periodic table
    anywhere left of the staircase
  12. where are the nonmetals found on the periodic table
    right of the staircase
  13. where are the metalloids found on the periodic table
    along the staircase
  14. what is the only metal that is liquid at room temp
    mercury
  15. how can you tell that a group of elements have similar properties
    if they are in the same group they have similar properties
  16. what info can be displayed in a periodic table
    the symbols and names of the elements, along with the info about the structure of their atoms
  17. elements in group 1A
    alkaline metals
  18. elements in group 2A
    alkaline earth metals
  19. nonmetals in group 7A
    halogens
  20. how can elements be classified based on electron configurations
    they can be sorted into noble gasses, representative elements, transition metals, or inner transition metals based on their electron configurations
  21. elements in groups 1A-7A; display a wide range of physical and chemical properties
    representative elements
  22. group B elements that are usually displayed in the main body of the periodic table
    transition metals
  23. elements that appear below the main body of the periodic table
    inner transition metals
  24. what are the trends among the elements for atomic size
    atomic size increases from top to bottom within a group and decreases from left to right across the periodic table
  25. half of the distance btween the nuclei of 2 atoms for the same element when the atoms r joined
    atomic radius
  26. as you go up to flourine on the periodic table, what happens to the atomic size
    the atomic size decreases
  27. what needs to happen for a neutral atom and what is the overall charge
    number of protons has to equal number of electrons and the overall charge is 0
  28. how do ions form
    positive and negative ions form when electrons are transferred btween atoms
  29. an atom or group of atoms that has a positive or negative charge
    ion
  30. an ion with a positive charge
    cation
  31. ion with a negative charge
    anion
  32. the energy required to remove an electron from an atom
    ionization energy
  33. what are the trends among the elements for first ionization energy
    first ionization energy tends to decrease from top to bottom within a group and increase from left to right across a period
  34. what happens to the ionization energy when you go up to flourine
    it increases
  35. what happens to the ionic size when you gain an electron
    it gets bigger
  36. what are the trends among the elements for ionic size
    ionic size tends to increase from top to bottom within a group. Generally, the size of cations and anions decrease from left to right across a period
  37. the ability of an atom of an element to attract elements when the atom is in a compound
    electronegativity
  38. what are the trends among the elements for electronegativity
    electronegativity values decrease from top to bottom within a group. For representative elements, the values tend to increase from left to right across a period
  39. what is the most electronegative element
    flourine
  40. what happens to the electromagnetic electricity as it gets closer to flourine
    it increases
  41. what happens to the atomic size as you go toward flourine
    decreases
  42. what happens to the ionization energy as you go toward flourine
    increases
  43. what happens to the electronegativity when you go towards flourine
    increases
  44. what is it called when it goes left to right on a periodic table
    a period
  45. what happens when it goes up and down on a periodic table
    group
  46. the subatomic particle that plays the greatest role in determining the physical and chemical properties of an element
    electron

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