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Chemistry, Models of atomic structure...

abbie Fitzpatrick 5 preguntas

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Preguntas del test (5)

  1. 1what is the relative mass of an electron?
    1. A1/1654
    2. B1/200
    3. C1/2000
    4. D1
  2. 2models of atomic [blank_start]structure[blank_end] have changed slightly over the years...
    in the start of the [blank_start]19th[blank_end] century, [blank_start]john Dalton[blank_end] described atoms as [blank_start]solid spheres[blank_end]... he said that these [blank_start]spheres[blank_end] made up different elements.
    in [blank_start]1897[blank_end], [blank_start]J.J.Thompson[blank_end] discovered the [blank_start]electron[blank_end]. this showed that atoms couldn't be solid spheres and indivisible. the new model was known as the [blank_start]plum pudding model[blank_end].

    in [blank_start]1909[blank_end], [blank_start]Ernest Rutherford[blank_end] and his students conducted the [blank_start]gold foil experiment[blank_end] where they fired [blank_start]alpha[blank_end] particles at a very thin [blank_start]gold[blank_end] sheet. the plum pudding model suggested that [blank_start]most[blank_end] alpha particles would be slightly [blank_start]deflected,[blank_end] however most particles passed straight through with only a few being deflected. this showed that the plum pudding model was [blank_start]wrong[blank_end]. [blank_start]Rutherford[blank_end] developed the [blank_start]nuclear model[blank_end]. this showed a tiny [blank_start]positive[blank_end] nucleus, surrounded by a [blank_start]cloud[blank_end] of negative electrons, with most being [blank_start]empty space[blank_end].
    scientists realised that if electrons where in a cloud then they would [blank_start]spiral[blank_end] down and cause the atom to [blank_start]collapse[blank_end]. [blank_start]Niels Bohr[blank_end] proposed a new model where electrons exist in shells or orbits of [blank_start]fixed energy[blank_end]. when electrons move between shells, [blank_start]electromagnetic radiation[blank_end] is absorbed or emitted. this model fitted experimental observations.
    this model is still used even though we can refine it into [blank_start]sub-shells[blank_end] as this model is simple and easy to understand.
    1. Astructure
    2. Bdevelopments
    3. C19th
    4. D17th
    5. E18th
    6. F20th
    7. Gjohn Dalton
    8. Hniels bohr
    9. Ijj. thompson
    10. Jernest rutherford
    11. Ksolid spheres
    12. Lcircular objects
    13. Mspherical objects
    14. Nsolid cubes
    15. Ospheres
    16. Pobjects
    17. Qcubes
    18. Rchemicals
    19. S1897
    20. T1987
    21. U1892
    22. V1879
    23. WJ.J.Thompson
    24. XErnest
    25. Yalbert einstein
    26. Zjohn newton
    27. AAelectron
    28. ABnucleus
    29. ACproton
    30. ADneutron
    31. AEplum pudding model
    32. AFnuclear model
    33. AGgold foil model
    34. AHapple pudding model
    35. AI1909
    36. AJ1902
    37. AK1802
    38. AL1907
    39. AMErnest Rutherford
    40. ANJ.j.thompson
    41. AOstudents
    42. APnumerousscientists
    43. AQ'gold foil experiment'
    44. AR'plum pudding experiement'
    45. AS'alpha particle experiment'
    46. ATalpha
    47. AUgamma
    48. AVbeta
    49. AWgold
    50. AXsilver
    51. AYbronze
    52. AZcopper
    53. BAmost
    54. BBfew
    55. BCa couple
    56. BDdeflected,
    57. BEinvisible,
    58. BFreversed,
    59. BGtransparent,
    60. BHwrong
    61. BIaccurate
    62. BJcorrect
    63. BKreliable
    64. BLRutherford
    65. BMThompson
    66. BNBohr
    67. BOmany scientists
    68. BP'Nuclear model'
    69. BQalpha model
    70. BRplum pudding extended model
    71. BSnucleus model
    72. BTpositive
    73. BUnegative
    74. BVweeny
    75. BWneutral
    76. BXcloud
    77. BYcollection
    78. BZempty space
    79. CAreflected
    80. CBinvisible
    81. CCspiral
    82. CDfall
    83. CEdestroy itself
    84. CFcollapse
    85. CGcollide
    86. CHNiels Bohr
    87. CInew scientists
    88. CJrutherford
    89. CKfixed energy
    90. CLplenty of space
    91. CMnothing
    92. CNenergy
    93. COelectromagnetic radiation
    94. CPgamma radiation
    95. CQelectrostatic radiation
    96. CRsub-shells
    97. CSadditional shells
    98. CTmore orbits
    99. CUp and s shells
  3. 3who described electrons as solid spheres and in when? [blank_start]John Dalton[blank_end] and in [blank_start]the 19th centrury[blank_end].
    1. AJohn Dalton
    2. Bthe 19th centrury
  4. 4in 1892, jj. Thompson made the plum pudding model.
    1. AVerdadero
    2. BFalso
  5. 5put the scientists in order with their year and experiment...
    [blank_start]John Dalton[blank_end] [blank_start]described atoms as solid spheres[blank_end] in [blank_start]the 19th century[blank_end].
    [blank_start]ernest Rutherford[blank_end] [blank_start]conducted the gold foil experiment[blank_end] in [blank_start]1897.[blank_end]
    [blank_start]Niels bohr[blank_end] [blank_start]discovered shells and orbits[blank_end] of [blank_start]fixed energy[blank_end].
    scientists later refined this to have [blank_start]sub-shells[blank_end].

    1. AJohn Dalton
    2. Bdescribed atoms as solid spheres
    3. Cthe 19th century
    4. Dernest Rutherford
    5. Econducted the gold foil experiment
    6. F1897.
    7. GNiels bohr
    8. Hdiscovered shells and orbits
    9. Ifixed energy
    10. Jsub-shells

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Descripción
AS - Level AS Chemistry Test sobre Chemistry, Models of atomic structure..., creado por abbie Fitzpatrick el 12/09/2016.
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