Science test

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Science test
2012-11-11 03:06:58

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  1. Who are two main contributors to the periodic table?
    • Dmitri Mendeleev
    • Henry Moseley
  2. Dmitri Mendeleev arranged the ________ perioid table in order of ____________________.
    • first periodic table
    • order of increasing atomic masses
  3. Henry Moseley arranged _________ periodic table in order of ___________.
    • Today's periodic table
    • arranged in order of increasing atomic numbers
  4. What is the difference between Mendeleev's table and Moseley's table?
    Mendeleev arranged his table by increasing atomic masses Moseley arranged his table by increasing atomic numbers
  5. Elements in the same period do not have the same ___________.
  6. The 1st element in a period is very _________.
    very active period
  7. last element in a period is very _______.
    very inactive gas
  8. Where is familes/groups located?
    vertical columns on periodic table
  9. When are properties similar?
    Are similar when moving down a group
  10. Where is alkali metals located?
    group 1 metals
  11. where are alkaline earth metals located?
    group 2 metals
  12. Alkali metals have how many valence electrons? Does it give up or gain when bonding?
    1 valence electron. Gives up this electron when bonding with other atoms.
  13. What group of elements are very reactive with water and very soft?
    alkali metals
  14. Notes: Alkali metals burned if touched.
  15. Where is alkali metals never found in?
    never found alone in nature.
  16. Where is alkaline metals stored?
    stored in gasoline or kerosene.
  17. When alkaline earth metals bond, do they gain or lose electrons.
  18. usually gives up the 2 valence electrons when bonding
  19. Notes: Alkaline earth metals is slower to react than alkali
  20. Where is alkaline earth metals located?
    found in earth's crust & in minerals
  21. Alkaline earth metals are what than group 1 elements?
  22. Notes: Most familiar metals are transitions:, iron, gold, silver
  23. What element is used in skull plates
  24. Which kind of metals is harder than alkali metals
    transition metals
  25. Transition metals are ______ reactive with water than alkali metals
    less reactive
  26. What is transiton metals used for?
    used for structure purposes.
  27. What element is used on hip replacement?
    Titanium (Ti)
  28. What is the family name for family 13?
    Boron family
  29. What does the boron family include?
    includes aluminium, the mose common metal in the Earth's outer layer.
  30. What is the name for family 14?
    Carbon family
  31. In the carbon family what will the valance electrons do when bonding?
    will give electrons to another atom or take electrons from another atom when bonding
  32. What is the name for the family 15.
    nitrogen family
  33. What will happen to the nitrogen family when bonding
    will take electrons from another atom when bonding.
  34. What is the name for family 16?
    chalcogen are forming
  35. What 2 elements are commonly found in ores.
    oxygen and sulfur- top 2 elements
  36. What will happen to family 16 when bonding?
    will take electrons from another atom when bonding
  37. What is the name for family 17?
  38. what does haologens mean
    salt forming
  39. Why don't noble gases react with other elements?
    Because they are very stable. Have a full outer electron shell
  40. What are the noble gases also known as?
    Inert gases
  41. What do the halogens do with electrons when bonding?
    will take electron during bonding
  42. How many valence electtrons do halogen elements have?
  43. Which elements belong to the nitrogen family?
    Nitrogen, Phosphorus, Arsenic, Antimony, and Bismuth
  44. What are the halogen elements used for?
    Iodine and bromine used in halogen lamps because it allow tungsten filament to brighter without burning out quickly
  45. WHat is the name of the family of elements that will give up or take elctrons from other atoms
    family 14, carbon family
  46. What type of elements, metal, nonmetal, or metalloid, are the elements in the boron family?
    Metalloid and metal
  47. What is the name of the family with atoms that have 3 valence electrons
  48. Boron family, family 13
  49. Of the alkali, alkaline earth and transition metals, which area is least reactive in water?
    Transition Metals
  50. List all of the alkaline earth metal elements?
    Berylium, Magnesium, Calcium, Strontium, Barium, Radium
  51. Between alkali and alkaline earth metals, which is slower to react?
    alkaline earth metals
  52. Which families of elements are harder: alkali or alkaline earth metals?
  53. alkaline earth metals
  54. Which family of elements is most active?
    alkali metals
  55. List all of elements that are halogens?
    Flourine, Chlorine, Bromine, Iodine, Astatine
  56. What are the two special names for the rare earth metals?
    Lanthanide series and Actinide series
  57. True or false. Hydrogen is a metal at room temp.
  58. What family is rare in nature?
    family 17- halogen
  59. What are diatomic molecules?
    molecules that are made up of 2 atoms of the same element
  60. What are the 7 diatomic molecules we are going to be working with?
    • H2- Hydrogen
    • N2-Nitrogen
    • O2-Oxygen
    • F2- Fluroine
    • Cl2- Chlorine
    • Br2- Bromine
    • I2- Iodine
  61. What are the types of bond?
    Convalent- electrons are shared between two nonmetal atoms

    Ionic- Electrons are transformed between a metal atom and a nonmetal atom.
  62. What element are used in fireworks?
    transition metals
  63. Transition metals have________ compounds
    and describe.
    • colorful compounds
    • Harder and more brittle than group 1 or 2.
  64. What period is used in LEDS?
    Lanthanide Series- 6th period
  65. What period does the Lanthanide series begin with?
    57,lanthanum (La)
  66. Elements in Lanthanide series have similar what?
    similiar physical and chemical properties.
  67. Where is Lanthanide series located?
    usually found mixed together in the same locations in Earth

    Because properties are so similar the mixtures are difficult to seperate, however recently they have been used in LED'S of laptops
  68. Define metals?
    shiny,mallerable, ductile, good conductors, high melting points and boiling points, usually solids.
  69. Metals tend to what?
    tend to form postive ions when they bond.
  70. Define malleable?.
    • hammered into thin sheets.
    • can change the shape of it.
  71. Define ductile?
    drawn into thin wires.
  72. Describe nonmetals
    • not shiny
    • nonmalleable
    • not ductile
    • poor conductors
    • low melting and boiling points
    • nonmetals tend to form negative ions
  73. Define metalloids
    elements that are not metals or nonmetals but have properties of both