Atomic Structure Theories
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Questions and Answers

Who formulated the first scientific theory about the atom?

  • Einstein
  • Rutherford
  • Democritus
  • Dalton (correct)
  • Ancient Greek philosophers believed that atoms were divisible components of matter.

    False

    What are the two types of particles found in the nucleus of an atom?

    Protons and neutrons

    Electrons revolve around the nucleus at very high speeds in certain __________.

    <p>energy levels</p> Signup and view all the answers

    Match the following scientists with their contributions to atomic theory:

    <p>Dalton = First scientific theory about the atom Rutherford = First atomic model based on experimental findings Democritus = Concept of indivisible matter Niels Bohr = Energy levels for electrons in atoms</p> Signup and view all the answers

    Study Notes

    Atomic Structure Theories

    • Early Greek philosophers proposed that matter is composed of tiny, indivisible particles called atoms.
    • John Dalton, in the 19th century, developed the first scientific atomic theory, suggesting atoms are indivisible.
    • Ernest Rutherford's 1909 atomic model was based on experimental evidence.
    • Atoms contain a nucleus, a tiny core, with protons and neutrons.
    • Electrons orbit the nucleus at distinct energy levels.
    • Protons, neutrons, and electrons are subatomic particles.

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    Description

    Explore the key developments in atomic theory from early Greek philosophies to Rutherford's experimental model. This quiz covers the defining characteristics of atoms, including their subatomic particles and energy levels. Challenge your understanding of the fundamental concepts of atomic structure.

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