Chemistry, Models of atomic structure...

abbie Fitzpatrick
Quiz by , created about 3 years ago

AS - Level AS Chemistry Quiz on Chemistry, Models of atomic structure..., created by abbie Fitzpatrick on 09/12/2016.

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abbie Fitzpatrick
Created by abbie Fitzpatrick about 3 years ago
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Question 1

Question
what is the relative mass of an electron?
Answer
  • 1/1654
  • 1/200
  • 1/2000
  • 1

Question 2

Question
models 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.
Answer
  • structure
  • developments
  • 19th
  • 17th
  • 18th
  • 20th
  • john Dalton
  • niels bohr
  • jj. thompson
  • ernest rutherford
  • solid spheres
  • circular objects
  • spherical objects
  • solid cubes
  • spheres
  • objects
  • cubes
  • chemicals
  • 1897
  • 1987
  • 1892
  • 1879
  • J.J.Thompson
  • Ernest
  • albert einstein
  • john newton
  • electron
  • nucleus
  • proton
  • neutron
  • plum pudding model
  • nuclear model
  • gold foil model
  • apple pudding model
  • 1909
  • 1902
  • 1802
  • 1907
  • Ernest Rutherford
  • J.j.thompson
  • students
  • numerousscientists
  • 'gold foil experiment'
  • 'plum pudding experiement'
  • 'alpha particle experiment'
  • alpha
  • gamma
  • beta
  • gold
  • silver
  • bronze
  • copper
  • most
  • few
  • a couple
  • deflected,
  • invisible,
  • reversed,
  • transparent,
  • wrong
  • accurate
  • correct
  • reliable
  • Rutherford
  • Thompson
  • Bohr
  • many scientists
  • 'Nuclear model'
  • alpha model
  • plum pudding extended model
  • nucleus model
  • positive
  • negative
  • weeny
  • neutral
  • cloud
  • collection
  • empty space
  • reflected
  • invisible
  • spiral
  • fall
  • destroy itself
  • collapse
  • collide
  • Niels Bohr
  • new scientists
  • rutherford
  • fixed energy
  • plenty of space
  • nothing
  • energy
  • electromagnetic radiation
  • gamma radiation
  • electrostatic radiation
  • sub-shells
  • additional shells
  • more orbits
  • p and s shells

Question 3

Question
who described electrons as solid spheres and in when? [blank_start]John Dalton[blank_end] and in [blank_start]the 19th centrury[blank_end].
Answer
  • John Dalton
  • the 19th centrury

Question 4

Question
in 1892, jj. Thompson made the plum pudding model.
Answer
  • True
  • False

Question 5

Question
put 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].
Answer
  • John Dalton
  • described atoms as solid spheres
  • the 19th century
  • ernest Rutherford
  • conducted the gold foil experiment
  • 1897.
  • Niels bohr
  • discovered shells and orbits
  • fixed energy
  • sub-shells