CHEM 219 MODULE 3 TESTED
QUESTIONS AND COMPLETE SOLUTIONS
◉ Stereoisomers
Answer: molecules that have the same molecular formula and
connectivity between the atoms but differ in the 3D arrangement
of those atoms in space
◉ Chirality
Answer: a property of a molecule where it cannot be
superimposed on its mirror image, usually because it has a carbon
atom bonded to four different groups (a chiral center).
◉ Achiral
Answer: a molecule that can be superimposed on its mirror
image, meaning it has no chirality and often contains a plane of
symmetry.
◉ Superimposability
Answer: the ability of one object or molecule to be placed over
another so that all atoms or parts align perfectly in the same
positions in space.
◉ Chiral Molecule
, Answer: an organic compound that can exist as two different
molecules (two different mirror image forms)
◉ The two different forms of chiral molecules are known as:
Answer: Enantiomers
◉ Enantiomers are:
Answer: different compounds with the same molecular formula
and atomic connectivity that are non-superimposable mirror
images of each other.
◉ The most common cause of chirality in an organic molecule is
the presence of a:
Answer: tetrahedral stereocenter
◉ ______________________ in an organic molecule is a way to quickly
determine if an organic molecule may possess the property of
chirality
Answer: identifying a stereocenter
◉ A stereocenter in an organic molecule is typically:
Answer: a carbon atom with tetrahedral geometry that is bonded
to 4 different atoms or groups
QUESTIONS AND COMPLETE SOLUTIONS
◉ Stereoisomers
Answer: molecules that have the same molecular formula and
connectivity between the atoms but differ in the 3D arrangement
of those atoms in space
◉ Chirality
Answer: a property of a molecule where it cannot be
superimposed on its mirror image, usually because it has a carbon
atom bonded to four different groups (a chiral center).
◉ Achiral
Answer: a molecule that can be superimposed on its mirror
image, meaning it has no chirality and often contains a plane of
symmetry.
◉ Superimposability
Answer: the ability of one object or molecule to be placed over
another so that all atoms or parts align perfectly in the same
positions in space.
◉ Chiral Molecule
, Answer: an organic compound that can exist as two different
molecules (two different mirror image forms)
◉ The two different forms of chiral molecules are known as:
Answer: Enantiomers
◉ Enantiomers are:
Answer: different compounds with the same molecular formula
and atomic connectivity that are non-superimposable mirror
images of each other.
◉ The most common cause of chirality in an organic molecule is
the presence of a:
Answer: tetrahedral stereocenter
◉ ______________________ in an organic molecule is a way to quickly
determine if an organic molecule may possess the property of
chirality
Answer: identifying a stereocenter
◉ A stereocenter in an organic molecule is typically:
Answer: a carbon atom with tetrahedral geometry that is bonded
to 4 different atoms or groups
