Stereochemistry Introduction Quiz
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Questions and Answers

What is the characteristic that distinguishes isomers from one another?

  • Their molecular structures
  • Their chemical properties
  • At least one physical characteristic (correct)
  • Their atomic masses

    • What is the field of chemistry that deals with the three-dimensional arrangements of atoms in molecules?

  • Inorganic chemistry
  • Stereochemistry (correct)
  • Organic chemistry
  • Biochemistry

    • What is the relationship between symmetry and chirality?

  • Symmetric objects are symmetric
  • Symmetric objects are chiral
  • Asymmetric objects are achiral
  • Asymmetric objects are chiral (correct)

    • Why do enzymes only recognize a particular enantiomer?

    <p>Because they are specific for their substrates' stereochemistry</p> Signup and view all the answers

    What is the most prevalent type of chirality center in organic chemistry?

    <p>Carbon atoms</p> Signup and view all the answers

    What is the characteristic that distinguishes enantiomers from diastereomers?

    <p>Their mirror images</p> Signup and view all the answers

    What is the direction of rotation of the plane of polarized light by a dextro-rotato compound?

    <p>Clockwise or right.</p> Signup and view all the answers

    What is the characteristic of compounds that are asymmetrical in nature?

    <p>They can rotate the plane of polarized light.</p> Signup and view all the answers

    What is the primary reason thalidomide was initially used in the 1950s?

    <p>To treat morning sickness during pregnancy.</p> Signup and view all the answers

    What is the current status of thalidomide usage?

    <p>It is being used to treat a skin condition and cancer, and is being investigated for other disorders.</p> Signup and view all the answers

    What is the characteristic of monochromatic light?

    <p>It consists of only one wavelength.</p> Signup and view all the answers

    What is the term for the ability of a compound to rotate the plane of polarized light?

    <p>Optical activity.</p> Signup and view all the answers

    What is the method of labeling asymmetric carbon atoms of molecules with letters called?

    <p>Cahn-Ingold-Prelog method</p> Signup and view all the answers

    What does the prefix 'rac' or 'racem' indicate in the IUPAC name of a compound?

    <p>A mixture of equal amounts of enantiomers</p> Signup and view all the answers

    What is the term for a mixture consisting of equal amounts of enantiomers?

    <p>Racemic mixture</p> Signup and view all the answers

    What is the symbol used to indicate a racemic mixture before the IUPAC name of a compound?

    <p>(±)</p> Signup and view all the answers

    What is the term for the direction in which the order of group priorities progresses in a clockwise direction?

    <p>R stereoisomer</p> Signup and view all the answers

    Who discovered the first racemate?

    <p>Louis Pasteur</p> Signup and view all the answers

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