Exploring Chemical Bonds
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Exploring Chemical Bonds

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Questions and Answers

Which type of chemical bond is formed through the sharing of electrons?

  • Hydrogen bond
  • Metallic bond
  • Covalent bond (correct)
  • Ionic bond

    • What is the term for the attractive force between oppositely charged ions in a chemical bond?

  • Quantum mechanical wavefunction interference
  • Electrostatic force (correct)
  • London dispersion force
  • Dipole-dipole interaction

    • Which theory includes orbital hybridization and resonance to describe chemical bonding?

  • Valence bond theory (correct)
  • Ligand field theory
  • VSEPR theory
  • Molecular orbital theory

    • Which type of chemical bond involves the transfer of electrons from one atom to another?

    <p>Ionic bond</p> Signup and view all the answers

    What is the result of a covalent bond between atoms?

    <p>Formation of molecules</p> Signup and view all the answers

    Which type of bond is an extreme example of delocalization of electrons over a large system of covalent bonds?

    <p>Metallic bond</p> Signup and view all the answers

    What gives organic molecular substances their soft bulk character and low melting points?

    <p>Covalent bonds</p> Signup and view all the answers

    Which type of bonding is responsible for the malleability and electrical conductivity of metals?

    <p>Metallic bonding</p> Signup and view all the answers

    Who proposed the theory of chemical combination stressing the electronegative and electropositive characters of the combining atoms?

    <p>Jöns Jakob Berzelius</p> Signup and view all the answers

    What did Ernest Rutherford's 1911 discovery reveal about the nature of the atom?

    <p>Atoms are composed of a nucleus surrounded by electrons</p> Signup and view all the answers

    Who developed the concept of electron-pair bonds, in which two atoms may share one to six electrons?

    <p>Gilbert N. Lewis</p> Signup and view all the answers

    Which part of the nervous system consists of the brain and spinal cord?

    <p>Central nervous system</p> Signup and view all the answers

    What is the main function of the autonomic nervous system?

    <p>Respond to emergencies</p> Signup and view all the answers

    Which type of nerves transmit signals from the brain?

    <p>Motor nerves</p> Signup and view all the answers

    What is the function of the enteric nervous system?

    <p>Control the gastrointestinal system</p> Signup and view all the answers

    Which subsystem of the autonomic nervous system is activated when organisms are in a relaxed state?

    <p>Parasympathetic nervous system</p> Signup and view all the answers

    What are nerves that exit from the cranium called?

    <p>Cranial nerves</p> Signup and view all the answers

    Which type of cell is responsible for sending signals in the form of electrochemical impulses to other cells?

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

    What are the thin fibers along which electrochemical impulses travel in neurons called?

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

    Which type of synapse involves the direct transmission of electrochemical impulses to neighboring cells?

    <p>Electrical synapses</p> Signup and view all the answers

    What are the specialized cells in the nervous system that provide structural and metabolic support called?

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

    Which organisms have no nervous system at all?

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

    What is the medical specialty that studies disorders of the nervous system?

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

    Which type of cell in the nervous system is responsible for support and nutrition, as well as signal transmission?

    <p>Glial cells</p> Signup and view all the answers

    In which type of animals does the nervous system consist of a nerve net, a diffuse network of isolated cells?

    <p>Radially symmetric animals</p> Signup and view all the answers

    What is the function of synapses in neurons?

    <p>To transmit chemical signals</p> Signup and view all the answers

    Which type of cell in the nervous system generates layers of myelin that provide electrical insulation?

    <p>Glial cells</p> Signup and view all the answers

    What is the major division of the vertebrate nervous system that consists of the brain and the spinal cord?

    <p>Central nervous system</p> Signup and view all the answers

    What is the tough, leathery outer layer that encloses and protects the central nervous system called?

    <p>Dura mater</p> Signup and view all the answers

    What is the collective term for the nervous system structures that do not lie within the central nervous system?

    <p>Peripheral nervous system</p> Signup and view all the answers

    Which type of cell in the nervous system serves as important resident immune cells within the central nervous system?

    <p>Glial cells</p> Signup and view all the answers

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