WCU CHEM 280 Final Exam Review
Questions With Correct Answers
Bonding |theories |are |used |to |predict |how |atoms |bond |together |to |form |molecules. |(T/F) |- |
CORRECT |ANSWER✔✔-TRUE
Drugs |to |fight |HIV |have |been |developed |using |bonding |theory |models |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
Li |: |is |the |proper |Lewis |structure |(dot |structure) |for |lithium. |(T/F) |- |CORRECT |ANSWER✔✔-
FALSE
A |chemical |bond |is |classified |as |a |covalent |bond |if |it |involves |the |transfer |of |electrons. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
The |Lewis |structure |of |oxygen |should |have |8 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-
FALSE
Lewis |structures |only |use |the |valence |electrons |in |determining |the |bonding. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
Having |eight |valence |electrons |is |very |stable |and |is |called |an |octet. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
A |correct |Lewis |structure |for |an |atom |of |carbon |would |have |eight |dots |surrounding |the |
symbol |of |the |element. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |correct |Lewis |structure |for |potassium |in |KCl |is |K+. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
,Chlorine |has |8 |valence |electrons |in |the |Lewis |structure |for |KCl. |(T/F) |- |CORRECT |ANSWER✔✔-
TRUE
The |Lewis |theory |predicts |that |the |formula |for |a |compound |of |magnesium |and |sulfur |is |MgS2.
|(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |Lewis |theory |predicts |that |the |formula |for |a |compound |made |of |sodium |and |fluorine |is |
NaF. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Lewis |theory |predicts |that |the |formula |for |a |compound |made |of |aluminum |and |phosphorus |is |
AlP. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |Lewis |structure |of |water |has |two |sets |of |lone |pair |electrons. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
The |structure |:H(-x3)H: |is |a |proper |representation |of |the |bonding |in |the |H2 |molecule. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
The |Lewis |structure |for |O2 |contains |a |triple |bond. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |double |bond |is |shorter |and |stronger |than |a |single |bond. |(T/F) |- |CORRECT |ANSWER✔✔-
TRUE
The |triple |bond |present |in |diatomic |nitrogen, |N2, |is |what |makes |this |molecule |so |reactive. |
(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |calculating |the |number |of |electrons |for |the |Lewis |structure |of |a |polyatomic |ion, |
subtract |one |electron |for |each |negative |charge. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
,The |correct |Lewis |structure |for |CO2 |shows |that |the |molecule |contains |two |double |bonds. |(T/F)
|- |CORRECT |ANSWER✔✔-TRUE
The |correct |Lewis |structure |for |CO2 |shows |that |the |carbon |atom |has |two |sets |of |lone |pair |
electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |calculating |the |number |of |electrons |for |the |Lewis |structure |of |a |polyatomic |ion, |you |
must |add |one |electron |for |each |negative |charge |and |subtract |one |electron |for |each |positive |
charge. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |sulfate |ion |contains |28 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |ammonium |ion |contains |10 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
Boron |forms |compounds |that |violate |the |octet |rule. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Resonance |structures |are |the |best |representation |we |can |draw |but |do |not |accurately |reflect |
the |true |structure. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Carbon |monoxide |contains |resonance |Lewis |structures. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |VSEPR |theory |predicts |that |the |angle |between |the |central |carbon |atom |and |the |two |
oxygen |atoms |in |CO2 |measures |180°. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |VSEPR |theory |predicts |that |the |H-C-H |angle |in |CH4 |measures |120°. |(T/F) |- |CORRECT |
ANSWER✔✔-FALSE
, It |is |important |to |identify |lone |pairs |around |a |central |atom |because |they |do |not |repel |other |
electron |groups. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |electron |geometry |of |a |molecule |is |never |the |same |as |its |molecular |geometry. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
When |you |have |2 |electron |groups |and |none |are |lone |pairs, |the |molecular |geometry |is |linear. |
(T/F) |- |CORRECT |ANSWER✔✔-TRUE
When |you |have |4 |electron |groups |and |1 |of |them |is |a |lone |pair, |the |molecular |geometry |is |
bent. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |you |have |4 |electron |groups |and |none |of |them |are |lone |pairs, |the |molecular |geometry |is
|trigonal |pyramidal. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |you |have |4 |electron |groups, |the |electron |geometry |is |tetrahedral. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
The |compound |H2S |contains |polar |bonds |but |the |molecule |is |nonpolar. |(T/F) |- |CORRECT |
ANSWER✔✔-FALSE
Water |and |oil |do |not |mix |because |water |molecules |are |nonpolar |and |molecules |that |compose
|oil |are |generally |polar. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
What |is |the |angle |between |electron |groups |in |the |linear |electron |geometry? |- |CORRECT |
ANSWER✔✔-180°
What |is |the |angle |between |electron |groups |in |the |trigonal |planar |electron |geometry? |- |
CORRECT |ANSWER✔✔-120°
Questions With Correct Answers
Bonding |theories |are |used |to |predict |how |atoms |bond |together |to |form |molecules. |(T/F) |- |
CORRECT |ANSWER✔✔-TRUE
Drugs |to |fight |HIV |have |been |developed |using |bonding |theory |models |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
Li |: |is |the |proper |Lewis |structure |(dot |structure) |for |lithium. |(T/F) |- |CORRECT |ANSWER✔✔-
FALSE
A |chemical |bond |is |classified |as |a |covalent |bond |if |it |involves |the |transfer |of |electrons. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
The |Lewis |structure |of |oxygen |should |have |8 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-
FALSE
Lewis |structures |only |use |the |valence |electrons |in |determining |the |bonding. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
Having |eight |valence |electrons |is |very |stable |and |is |called |an |octet. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
A |correct |Lewis |structure |for |an |atom |of |carbon |would |have |eight |dots |surrounding |the |
symbol |of |the |element. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |correct |Lewis |structure |for |potassium |in |KCl |is |K+. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
,Chlorine |has |8 |valence |electrons |in |the |Lewis |structure |for |KCl. |(T/F) |- |CORRECT |ANSWER✔✔-
TRUE
The |Lewis |theory |predicts |that |the |formula |for |a |compound |of |magnesium |and |sulfur |is |MgS2.
|(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |Lewis |theory |predicts |that |the |formula |for |a |compound |made |of |sodium |and |fluorine |is |
NaF. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Lewis |theory |predicts |that |the |formula |for |a |compound |made |of |aluminum |and |phosphorus |is |
AlP. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |Lewis |structure |of |water |has |two |sets |of |lone |pair |electrons. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
The |structure |:H(-x3)H: |is |a |proper |representation |of |the |bonding |in |the |H2 |molecule. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
The |Lewis |structure |for |O2 |contains |a |triple |bond. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |double |bond |is |shorter |and |stronger |than |a |single |bond. |(T/F) |- |CORRECT |ANSWER✔✔-
TRUE
The |triple |bond |present |in |diatomic |nitrogen, |N2, |is |what |makes |this |molecule |so |reactive. |
(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |calculating |the |number |of |electrons |for |the |Lewis |structure |of |a |polyatomic |ion, |
subtract |one |electron |for |each |negative |charge. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
,The |correct |Lewis |structure |for |CO2 |shows |that |the |molecule |contains |two |double |bonds. |(T/F)
|- |CORRECT |ANSWER✔✔-TRUE
The |correct |Lewis |structure |for |CO2 |shows |that |the |carbon |atom |has |two |sets |of |lone |pair |
electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |calculating |the |number |of |electrons |for |the |Lewis |structure |of |a |polyatomic |ion, |you |
must |add |one |electron |for |each |negative |charge |and |subtract |one |electron |for |each |positive |
charge. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |sulfate |ion |contains |28 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |ammonium |ion |contains |10 |valence |electrons. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
Boron |forms |compounds |that |violate |the |octet |rule. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Resonance |structures |are |the |best |representation |we |can |draw |but |do |not |accurately |reflect |
the |true |structure. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
Carbon |monoxide |contains |resonance |Lewis |structures. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |VSEPR |theory |predicts |that |the |angle |between |the |central |carbon |atom |and |the |two |
oxygen |atoms |in |CO2 |measures |180°. |(T/F) |- |CORRECT |ANSWER✔✔-TRUE
The |VSEPR |theory |predicts |that |the |H-C-H |angle |in |CH4 |measures |120°. |(T/F) |- |CORRECT |
ANSWER✔✔-FALSE
, It |is |important |to |identify |lone |pairs |around |a |central |atom |because |they |do |not |repel |other |
electron |groups. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
The |electron |geometry |of |a |molecule |is |never |the |same |as |its |molecular |geometry. |(T/F) |- |
CORRECT |ANSWER✔✔-FALSE
When |you |have |2 |electron |groups |and |none |are |lone |pairs, |the |molecular |geometry |is |linear. |
(T/F) |- |CORRECT |ANSWER✔✔-TRUE
When |you |have |4 |electron |groups |and |1 |of |them |is |a |lone |pair, |the |molecular |geometry |is |
bent. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |you |have |4 |electron |groups |and |none |of |them |are |lone |pairs, |the |molecular |geometry |is
|trigonal |pyramidal. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
When |you |have |4 |electron |groups, |the |electron |geometry |is |tetrahedral. |(T/F) |- |CORRECT |
ANSWER✔✔-TRUE
The |compound |H2S |contains |polar |bonds |but |the |molecule |is |nonpolar. |(T/F) |- |CORRECT |
ANSWER✔✔-FALSE
Water |and |oil |do |not |mix |because |water |molecules |are |nonpolar |and |molecules |that |compose
|oil |are |generally |polar. |(T/F) |- |CORRECT |ANSWER✔✔-FALSE
What |is |the |angle |between |electron |groups |in |the |linear |electron |geometry? |- |CORRECT |
ANSWER✔✔-180°
What |is |the |angle |between |electron |groups |in |the |trigonal |planar |electron |geometry? |- |
CORRECT |ANSWER✔✔-120°
