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Atomic History Scientists

Quiz by Nicholas Hendley

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11 questions
Show answers
  • Q1
    Who originally had the idea of an atom?
    Democritus
    30s
  • Q2
    What does the Greek term "atomos" mean?
    uncuttable
    20s
  • Q3
    Why was neither Democritus's ideas or Aristotle's ideas proven true over one another?
    It didn't 'matter'.
    They were both right.
    They never finished their research.
    They both lacked experimental support.
    20s
  • Q4
    Which scientist was able to show atomic theory?
    Lord Rutherford
    Niels Bohr
    John Dalton
    J. J. Thomson
    20s
  • Q5
    Which of the following is NOT an idea of Dalton's atomic theory of matter?
    All matter is composed of atoms.
    Elements can change into other elements due to nuclear reactivity.
    Atoms can combine, separate and re-arrange to form new compounds.
    All atoms of the same element are identical.
    20s
  • Q6
    What is Thomson credited with discovering?
    The mass of the electron
    The electron
    The neutron
    The nucleus
    20s
  • Q7
    What aspect of the electron did Thomson measure?
    charge-to-mass ratio
    30s
  • Q8
    What best describes Thomson's model of the atom?
    A positive nucleus with electrons existing in regions of probability.
    A positive nucleus with electrons orbiting like planets around the sun
    The plum-pudding model
    Simple spheres
    30s
  • Q9
    Which best describes Bohr's model of the atom?
    A positive nucleus with electrons existing in regions of probability.
    The plum-pudding model
    A positive nucleus with electrons orbiting like planets around the sun
    Simple spheres
    30s
  • Q10
    Why did Rutherford conclude the nucleus is positive?
    Alpha particles were repelled by it.
    It had to be to attract electrons.
    He knew it had protons in it.
    Because alpha particles got stuck on it.
    30s
  • Q11
    Why did Rutherford conclude the nucleus contains a lot of mass?
    Deflected alpha particles have a sizable mass.
    Because the experiment used gold, which is massive.
    Because alpha particles are positive and were repelled.
    Because electrons are negative and surround it.
    30s

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