Atomic Structure and Elements Quiz
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Questions and Answers

What is the basic particle of the chemical elements?

  • Electron
  • Neutron
  • Photon
  • Proton (correct)
  • What is an atom with more electrons than protons called?

  • Positive ion (cation)
  • Negative ion (anion) (correct)
  • Neutron
  • Isotope
  • What distinguishes one chemical element from another?

  • Number of electrons
  • Number of protons (correct)
  • Atomic mass
  • Number of neutrons
  • What part of the atom contains more than 99.94% of its mass?

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

    Why can humans not see atoms with conventional microscopes?

    <p>They are smaller than the shortest wavelength of visible light</p> Signup and view all the answers

    What is the nucleus of an atom made of?

    <p>The nucleus of an atom consists of protons and generally neutrons.</p> Signup and view all the answers

    How are isotopes of the same element defined?

    <p>Isotopes of the same element are defined as atoms with the same number of protons but a different number of neutrons.</p> Signup and view all the answers

    What is the overall charge of an atom when the numbers of protons and electrons are equal?

    <p>When the numbers of protons and electrons are equal, the atom is electrically neutral as a whole.</p> Signup and view all the answers

    What is the size comparison between a human hair and atoms?

    <p>A human hair is about a million carbon atoms wide, and atoms are typically around 100 picometers across.</p> Signup and view all the answers

    Why is it not possible to accurately predict the behavior of atoms using classical physics?

    <p>It is not possible to accurately predict the behavior of atoms using classical physics due to quantum effects.</p> Signup and view all the answers

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