The Atomic Hypothesis and J
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The Atomic Hypothesis and J

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Questions and Answers

According to J.J. Thomson's model of the atom, the positive charge of the atom is distributed

  • only on the surface of the atom
  • only in the nucleus of the atom
  • in a specific pattern inside the atom
  • uniformly throughout the volume of the atom (correct)
  • According to J.J. Thomson's model, the negatively charged electrons are embedded in the atom like

  • birds in a nest
  • sand in an hourglass
  • pebbles in a pond
  • seeds in a watermelon (correct)
  • What did J.J. Thomson's experiments on electric discharge through gases reveal about atoms?

  • Atoms contain positively charged constituents
  • Atoms have a specific structure inside
  • Atoms are electrically neutral
  • Atoms contain negatively charged constituents (correct)
  • Why must an atom contain some positive charge?

    <p>To neutralize the negative charge of the electrons</p> Signup and view all the answers

    What is the term used to describe the first model of the atom proposed by J.J. Thomson?

    <p>The Thomson model</p> Signup and view all the answers

    What experiments did J.J. Thomson carry out in 1897?

    <p>Experiments on electric discharge through gases.</p> Signup and view all the answers

    What did J.J. Thomson's experiments reveal about atoms?

    <p>Atoms of different elements contain negatively charged constituents (electrons) that are identical for all atoms.</p> Signup and view all the answers

    What was the first model of the atom proposed by J.J. Thomson?

    <p>The positive charge of the atom is uniformly distributed throughout the volume of the atom and the negatively charged electrons are embedded in it like seeds in a watermelon.</p> Signup and view all the answers

    When was J.J. Thomson born?

    <p>1856</p> Signup and view all the answers

    What is the term used to describe J.J. Thomson's model of the atom?

    <p>Plum pudding model.</p> Signup and view all the answers

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