18 Questions
What is the characteristic that distinguishes isomers from one another?
At least one physical characteristic
What is the field of chemistry that deals with the three-dimensional arrangements of atoms in molecules?
Stereochemistry
What is the relationship between symmetry and chirality?
Asymmetric objects are chiral
Why do enzymes only recognize a particular enantiomer?
Because they are specific for their substrates' stereochemistry
What is the most prevalent type of chirality center in organic chemistry?
Carbon atoms
What is the characteristic that distinguishes enantiomers from diastereomers?
Their mirror images
What is the direction of rotation of the plane of polarized light by a dextro-rotato compound?
Clockwise or right.
What is the characteristic of compounds that are asymmetrical in nature?
They can rotate the plane of polarized light.
What is the primary reason thalidomide was initially used in the 1950s?
To treat morning sickness during pregnancy.
What is the current status of thalidomide usage?
It is being used to treat a skin condition and cancer, and is being investigated for other disorders.
What is the characteristic of monochromatic light?
It consists of only one wavelength.
What is the term for the ability of a compound to rotate the plane of polarized light?
Optical activity.
What is the method of labeling asymmetric carbon atoms of molecules with letters called?
Cahn-Ingold-Prelog method
What does the prefix 'rac' or 'racem' indicate in the IUPAC name of a compound?
A mixture of equal amounts of enantiomers
What is the term for a mixture consisting of equal amounts of enantiomers?
Racemic mixture
What is the symbol used to indicate a racemic mixture before the IUPAC name of a compound?
(±)
What is the term for the direction in which the order of group priorities progresses in a clockwise direction?
R stereoisomer
Who discovered the first racemate?
Louis Pasteur
Test your understanding of stereochemistry, a branch of chemistry dealing with 3D arrangements of atoms in molecules, and its importance in inorganic and organic chemistry, with applications in medicine.
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