Chem 103 Final Exam UPDATED
ACTUAL Questions and CORRECT
Answers
Organic compounds are typically... - CORRECT ANSWER- ✔✔insoluble in H2O and form
covalent bonds
What do hydrocarbons contain? - CORRECT ANSWER- ✔✔only carbon and hydrogen
What is an aliphatic hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
carbon and hydrogen joined together in straight chains, branched chains or non-aromatic
rings.
What is an aromatic hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon with a
benzene ring and alternating double bonds.
What is a saturated hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
only single-bonded carbon atoms.
What is an unsaturated hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
at least one double or triple bond.
How do you draw the line structure of an organic compound? - CORRECT ANSWER-
✔✔Draw zigzag lines with each point as a carbon. Hydrogens are not drawn but assumed.
What is the molecular formula? - CORRECT ANSWER- ✔✔Lists the kind and number of
each atom in a molecule
What is the structural formula? - CORRECT ANSWER- ✔✔shows each atom and bond in a
molecule
What is the condensed formula? - CORRECT ANSWER- ✔✔shows all the atoms in a
molecule in sequential order indicating which atoms are bonded to which
, How many bonds does carbon make? - CORRECT ANSWER- ✔✔4
What is the shape of a carbon structure? - CORRECT ANSWER- ✔✔tetrahedral
What is an isomer? - CORRECT ANSWER- ✔✔Compounds with the same molecular
formula but different structures and PHYSICAL PROPERTIES.
What happens as the carbon chain (molecular weight) in a hydrocarbon goes up? -
CORRECT ANSWER- ✔✔Melting point, boiling point, and density increase.
What is a primary carbon? - CORRECT ANSWER- ✔✔a carbon attached to only one other
carbon
What is a secondary carbon? - CORRECT ANSWER- ✔✔a carbon attached to 2 other
carbons
What is a tertiary carbon? - CORRECT ANSWER- ✔✔A carbon attached to 3 other carbons.
What kind of aliphatic hydrocarbon are cis trans isomers? - CORRECT ANSWER-
✔✔Alkene
What are the two kinds of geometric isomers? - CORRECT ANSWER- ✔✔Cis = two groups
same side (medically good)
trans= two groups opposite sides (toxic)
How can geometric isomers interconvert? - CORRECT ANSWER- ✔✔Only by breaking c-c
bonds.
What are the products of an alkane complete combustion reaction? - CORRECT ANSWER-
✔✔CO2, H2O and heat
ACTUAL Questions and CORRECT
Answers
Organic compounds are typically... - CORRECT ANSWER- ✔✔insoluble in H2O and form
covalent bonds
What do hydrocarbons contain? - CORRECT ANSWER- ✔✔only carbon and hydrogen
What is an aliphatic hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
carbon and hydrogen joined together in straight chains, branched chains or non-aromatic
rings.
What is an aromatic hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon with a
benzene ring and alternating double bonds.
What is a saturated hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
only single-bonded carbon atoms.
What is an unsaturated hydrocarbon? - CORRECT ANSWER- ✔✔A hydrocarbon containing
at least one double or triple bond.
How do you draw the line structure of an organic compound? - CORRECT ANSWER-
✔✔Draw zigzag lines with each point as a carbon. Hydrogens are not drawn but assumed.
What is the molecular formula? - CORRECT ANSWER- ✔✔Lists the kind and number of
each atom in a molecule
What is the structural formula? - CORRECT ANSWER- ✔✔shows each atom and bond in a
molecule
What is the condensed formula? - CORRECT ANSWER- ✔✔shows all the atoms in a
molecule in sequential order indicating which atoms are bonded to which
, How many bonds does carbon make? - CORRECT ANSWER- ✔✔4
What is the shape of a carbon structure? - CORRECT ANSWER- ✔✔tetrahedral
What is an isomer? - CORRECT ANSWER- ✔✔Compounds with the same molecular
formula but different structures and PHYSICAL PROPERTIES.
What happens as the carbon chain (molecular weight) in a hydrocarbon goes up? -
CORRECT ANSWER- ✔✔Melting point, boiling point, and density increase.
What is a primary carbon? - CORRECT ANSWER- ✔✔a carbon attached to only one other
carbon
What is a secondary carbon? - CORRECT ANSWER- ✔✔a carbon attached to 2 other
carbons
What is a tertiary carbon? - CORRECT ANSWER- ✔✔A carbon attached to 3 other carbons.
What kind of aliphatic hydrocarbon are cis trans isomers? - CORRECT ANSWER-
✔✔Alkene
What are the two kinds of geometric isomers? - CORRECT ANSWER- ✔✔Cis = two groups
same side (medically good)
trans= two groups opposite sides (toxic)
How can geometric isomers interconvert? - CORRECT ANSWER- ✔✔Only by breaking c-c
bonds.
What are the products of an alkane complete combustion reaction? - CORRECT ANSWER-
✔✔CO2, H2O and heat
