CHEM 219 Module 1 problem set
Study online at https://quizlet.com/_d8gt73
1. On a piece of scratch paper, write out the Lewis Oxygen - a) 2 b) 2 c) 2
Dot Diagram for each of the indicated elements and Carbon - a) 0 b) 4 c) 4
determine the following for each: Hydrogen- a) 0 b) 1 c) 1
a) The number of Lone Pairs the atom possesses Nitrogen - a) 1 b) 3 c) 3
in its valence shell.b) The number of Unpaired Elec-
trons the atom possesses in its valence shell.c) The
number of bonds the atom will form.
Oxygen
Carbon
Hydrogen
Nitrogen
2. Classify the bonding between the given pairs of a. Br-Br: Electronegativity dif-
atoms as ionic, covalent, or polar covalent. Use the ference () = 0 = COVALENT (or
table of electronegativities shown below to help pure covalent)
with the classification. b. K-Cl: () = 2.2 = IONIC
c. P-Cl: ()= 0.9 = POLAR COVA-
a. Br and Br LENT
b. K and Cl d. C-O: ()= 1.0 = POLAR COVA-
c. P and Cl LENT
d. C and O e. Na-Br: () = 1.8 = POLAR CO-
e. Na and Br VALENT
3. Define the term constitutional isomer. Two (or more) different chem-
ical compounds with the same
molecular formula but differ-
ent connectivity between the
atoms in their structural formu-
lae.
4.
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, CHEM 219 Module 1 problem set
Study online at https://quizlet.com/_d8gt73
Explain (using specific evidence) what makes the Both compounds have a MF of
following two compounds constitutional isomers of C3H6O - same MF.
one another: 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.
5. What is the relationship between the compounds Different compounds that are
shown? Are they the same compound, constitution- not related. They have different
al isomers, or two different compounds that are not MF - (a) C3H8O, (b) C3H6O.
related to one another? Explain.
6. Identify each of the following carbon skeletons as a) Branched
linear (continuous), branched, or cyclic. b) Linear (continuous)
c) Cyclic
7. On a piece of scratch paper, write out structural for- 4
mulae for all of the constitutional isomers possible
for the MF C3H6F2. How many isomers are possible
for this formula?
8. Characterize each of the following structural for- a) Super-Condensed
mula representations as either a dash, condensed, b) Condensed
super-condensed, or bond-line formula: c) Bond-line
d) Dash
9. Write the molecular formula for each of the com- a) C5H10
pounds whose bond-line formulae are given below. b) C3H8O
c) C4H10O
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Study online at https://quizlet.com/_d8gt73
1. On a piece of scratch paper, write out the Lewis Oxygen - a) 2 b) 2 c) 2
Dot Diagram for each of the indicated elements and Carbon - a) 0 b) 4 c) 4
determine the following for each: Hydrogen- a) 0 b) 1 c) 1
a) The number of Lone Pairs the atom possesses Nitrogen - a) 1 b) 3 c) 3
in its valence shell.b) The number of Unpaired Elec-
trons the atom possesses in its valence shell.c) The
number of bonds the atom will form.
Oxygen
Carbon
Hydrogen
Nitrogen
2. Classify the bonding between the given pairs of a. Br-Br: Electronegativity dif-
atoms as ionic, covalent, or polar covalent. Use the ference () = 0 = COVALENT (or
table of electronegativities shown below to help pure covalent)
with the classification. b. K-Cl: () = 2.2 = IONIC
c. P-Cl: ()= 0.9 = POLAR COVA-
a. Br and Br LENT
b. K and Cl d. C-O: ()= 1.0 = POLAR COVA-
c. P and Cl LENT
d. C and O e. Na-Br: () = 1.8 = POLAR CO-
e. Na and Br VALENT
3. Define the term constitutional isomer. Two (or more) different chem-
ical compounds with the same
molecular formula but differ-
ent connectivity between the
atoms in their structural formu-
lae.
4.
1/8
, CHEM 219 Module 1 problem set
Study online at https://quizlet.com/_d8gt73
Explain (using specific evidence) what makes the Both compounds have a MF of
following two compounds constitutional isomers of C3H6O - same MF.
one another: 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.
5. What is the relationship between the compounds Different compounds that are
shown? Are they the same compound, constitution- not related. They have different
al isomers, or two different compounds that are not MF - (a) C3H8O, (b) C3H6O.
related to one another? Explain.
6. Identify each of the following carbon skeletons as a) Branched
linear (continuous), branched, or cyclic. b) Linear (continuous)
c) Cyclic
7. On a piece of scratch paper, write out structural for- 4
mulae for all of the constitutional isomers possible
for the MF C3H6F2. How many isomers are possible
for this formula?
8. Characterize each of the following structural for- a) Super-Condensed
mula representations as either a dash, condensed, b) Condensed
super-condensed, or bond-line formula: c) Bond-line
d) Dash
9. Write the molecular formula for each of the com- a) C5H10
pounds whose bond-line formulae are given below. b) C3H8O
c) C4H10O
2/8
