CHEM 219 MODULE 7 UPDATED ACTUAL EXAM QUESTIONS CORRECT ANSWERS
GRADED A PLUS
CHEM219 Module 7 2026/2027 Actual EXAM Script
Questions and Answers Verified Solutions Latest
Update
Question:
Classify the bonding between the given pairs of atoms as ionic, covalent, or polar covalent. Use the
table of electronegativities shown below to help with the classification. a. Br and Br b. K and Cl c. P
and Cl d. C and O e. Na and Br.
Answer:
a. Br-Br: Electronegativity difference () = 0 = COVALENT (or pure covalent) b. K-Cl: () = 2.2 =
IONIC c. P-Cl: ()= 0.9 = POLAR COVALENT d. C-O: ()= 1.0 = POLAR COVALENT e. Na-Br: ()
= 1.8 = POLAR COVALENT
Question:
Define the term constitutional isomer.
Answer:
Two (or more) different chemical compounds with the same molecular formula but different
connectivity between the atoms in their structural formulae.
Question:
Explain (using specific evidence) what makes the following two compounds constitutional isomers
of one another:.
Answer:
Both compounds have a MF of C3H6O - same MF. Compound "a" has a 3-carbon chain with a C=O
in the middle. No H atom connected to C of C=O. Compound "b" has a 3-carbon chain with a C=O
at the end. There is an H attached to the C of the C=O.
Question:
, What is the relationship between the compounds shown? Are they the same compound,
constitutional isomers, or two different compounds that are not related to one another? Explain.
Answer:
Different compounds that are not related. They have different MF - (a) C3H8O, (b) C3H6O.
Question:
Identify each of the following carbon skeletons as linear (continuous), branched, or cyclic.
Answer:
a) Branched b) Linear (continuous) c) Cyclic
Question:
On a piece of scratch paper, write out structural formulae for all of the constitutional isomers
possible for the MF C3H6F2. How many isomers are possible for this formula?
Answer:
4
Question:
Characterize each of the following structural formula representations as either a dash, condensed,
super-condensed, or bond-line formula:.
Answer:
a) Super-Condensed b) Condensed c) Bond-line d) Dash
Question:
Write the molecular formula for each of the compounds whose bond-line formulae are given below.
Answer:
a) C5H10 b) C3H8O c) C4H10O
GRADED A PLUS
CHEM219 Module 7 2026/2027 Actual EXAM Script
Questions and Answers Verified Solutions Latest
Update
Question:
Classify the bonding between the given pairs of atoms as ionic, covalent, or polar covalent. Use the
table of electronegativities shown below to help with the classification. a. Br and Br b. K and Cl c. P
and Cl d. C and O e. Na and Br.
Answer:
a. Br-Br: Electronegativity difference () = 0 = COVALENT (or pure covalent) b. K-Cl: () = 2.2 =
IONIC c. P-Cl: ()= 0.9 = POLAR COVALENT d. C-O: ()= 1.0 = POLAR COVALENT e. Na-Br: ()
= 1.8 = POLAR COVALENT
Question:
Define the term constitutional isomer.
Answer:
Two (or more) different chemical compounds with the same molecular formula but different
connectivity between the atoms in their structural formulae.
Question:
Explain (using specific evidence) what makes the following two compounds constitutional isomers
of one another:.
Answer:
Both compounds have a MF of C3H6O - same MF. Compound "a" has a 3-carbon chain with a C=O
in the middle. No H atom connected to C of C=O. Compound "b" has a 3-carbon chain with a C=O
at the end. There is an H attached to the C of the C=O.
Question:
, What is the relationship between the compounds shown? Are they the same compound,
constitutional isomers, or two different compounds that are not related to one another? Explain.
Answer:
Different compounds that are not related. They have different MF - (a) C3H8O, (b) C3H6O.
Question:
Identify each of the following carbon skeletons as linear (continuous), branched, or cyclic.
Answer:
a) Branched b) Linear (continuous) c) Cyclic
Question:
On a piece of scratch paper, write out structural formulae for all of the constitutional isomers
possible for the MF C3H6F2. How many isomers are possible for this formula?
Answer:
4
Question:
Characterize each of the following structural formula representations as either a dash, condensed,
super-condensed, or bond-line formula:.
Answer:
a) Super-Condensed b) Condensed c) Bond-line d) Dash
Question:
Write the molecular formula for each of the compounds whose bond-line formulae are given below.
Answer:
a) C5H10 b) C3H8O c) C4H10O
