ETS Major Field Test – Chemistry Exam
Questions And Answers
isomers are two compounds with the same molecular formula that
are different -
correct answer ✅what are isomers
1. Structural (constitutional) isomers
2. Stereoisomers (two types) - enantiomers and diasteromers
3. Geometric isomers (also known as cis and trans isomers) -
correct answer ✅What are the three types of isomers?
different bonding arrangement of atoms. atoms are bonded
together in a different sequence -
correct answer ✅what is a structural (constitutional) isomer?
stereoisomers: atoms are bonded together in the same sequence,
but have different 3-D arrangement in space
enantiomers: non-superimposable mirror images
diasteromers: stereoisomers that are not enantiomers: not
superimposable and not mirror images -
correct answer ✅what is a stereoisomer? what are the two types
of stereoisomers?
, ETS Major Field Test – Chemistry Exam
Questions And Answers
an atom that has four different groups attached to it -
correct answer ✅what is a chiral atom?
-R configuration - clockwise
-S configuration - counterclockwise -
correct answer ✅If a chiral atoms is in the "R" configuration, in
what direction does the arc go?
if a chiral atom is in the "S" configuration, in what direction does
the arc go?
at least 2 -
correct answer ✅how many chiral centers does a diastereomer
need to have?
the larger the molecular weight, the lower the water solubility -
correct answer ✅how does molecular weight relate to water-
solubility?
-increases water solubility
-alcohols, amines, C=O, ethers, and F -
correct answer ✅-How does the presence of hydrogen-bonding
change the water-solubility?
Questions And Answers
isomers are two compounds with the same molecular formula that
are different -
correct answer ✅what are isomers
1. Structural (constitutional) isomers
2. Stereoisomers (two types) - enantiomers and diasteromers
3. Geometric isomers (also known as cis and trans isomers) -
correct answer ✅What are the three types of isomers?
different bonding arrangement of atoms. atoms are bonded
together in a different sequence -
correct answer ✅what is a structural (constitutional) isomer?
stereoisomers: atoms are bonded together in the same sequence,
but have different 3-D arrangement in space
enantiomers: non-superimposable mirror images
diasteromers: stereoisomers that are not enantiomers: not
superimposable and not mirror images -
correct answer ✅what is a stereoisomer? what are the two types
of stereoisomers?
, ETS Major Field Test – Chemistry Exam
Questions And Answers
an atom that has four different groups attached to it -
correct answer ✅what is a chiral atom?
-R configuration - clockwise
-S configuration - counterclockwise -
correct answer ✅If a chiral atoms is in the "R" configuration, in
what direction does the arc go?
if a chiral atom is in the "S" configuration, in what direction does
the arc go?
at least 2 -
correct answer ✅how many chiral centers does a diastereomer
need to have?
the larger the molecular weight, the lower the water solubility -
correct answer ✅how does molecular weight relate to water-
solubility?
-increases water solubility
-alcohols, amines, C=O, ethers, and F -
correct answer ✅-How does the presence of hydrogen-bonding
change the water-solubility?
