stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Kjain 24-25 Midterm Honors Units 3-4 Flashcards | StudBud
Explore
/
Kjain 24-25 Midterm Honors Units 3-4
Kjain 24-25 Midterm Honors Units 3-4
60 terms
·
StudBud Administration
·
144 plays
Imported from external platform
Flashcards
60 cards
F
Practice quiz
P
Host live
L
Questions
60
Answers
1
What is the VSEPR structure of CH
4
?
Trigonal Pyramid
Trigonal Planar
Linear
Tetrahedral
2
Which formula is an empirical formula?
C3H6
CH4
C2H6
С4Н10
3
Which contains covalent bonds?
NaCl
K2S
Zn
CO2
4
Which one of the following Molecular formulas is also an empirical formula?
N2O
H2O2
C6H6
C6H6O2
5
What is the first step for drawing Lewis dot structures for covalent compounds?
Draw your skeleton
Determine the total valence electrons
Connect all atoms with bonds
Make sure all atoms have an octet
6
What is the VSEPR structure for SO
3
?
Trigonal Pyramid
Linear
Trigonal Planar
Tetrahedral
7
What is the predominant intermolecular force in CBr
4
?
Hydrogen
Ionic
Dipole-dipole
London Dispersion
8
Which of the following could have the Lewis Dot Diagram illustrated?
fluorine
oxygen
aluminum
radon
9
Hyrdrogen Bonding occurs in which of the following?
CH3CH2OH
CH2O
CH3OCH3
HCl
10
Is the molecule polar or non-polar?
polar
non-polar
11
What is the strongest type of intermolecular force?
they all have equal strength
Permanent Dipole-Dipole
Temporary Dipole
Hydrogen Bonding
12
When dealing with covalent compounds
use prefixes
use polyatomic chart
use roman numerals
no change is needed
13
What is the percent oxygen in water?
67 %
11.1 %
16%
88.9 %
14
What intermolecular forces are involved in O
2
?
dipole-dipole
Hydrogen bonding
London dispersion
15
Which elements are exceptions to the rule when drawing Lewis dot structures?
C and H
Be and B
P and He
H and Al
16
According to VSEPR, if there are three electron domains around a center atom, they will be arranged how?
linear
trigonal pyramidal
bent
trigonal planar
17
What is a property of a covalent compound?
Conducts electricity
Made of two nonmetals
High melting point
Solid at room temperature
18
What is the empirical formula is compound is 74.83 % C and 25.17 % H?
CH
CH4
C3H4
C2H8
19
What intermolecular forces are present in the following molecule?
LDF, dipole-dipole, and H-bonding
LDF & Dipole-dipole
Dipole-dipole only
LDF only
20
Which intermolecular force is experienced by all molecules?
Hydrogen Bonding
London Dispersion Forces
Ionic
Dipole Dipole
21
What VSEPR shape would OCl
2
have?
Tetrahedral
Linear
Bent
Trigonal Pyramidal
22
Is the molecule polar or non-polar?
non-polar
polar
23
What is the molar mass of barium chloride, BaCl
2
?
208
345
173
45
24
Which one of the following statements of a single, double, and triple C-C bond is correct?
C≡C is shorter than either the C=C and C-C
they are all the same length
C=C is shorter than the C-C and the C≡C bonds
C-C is shorter than either C=C or C≡C
25
Which one of the following is the bond angle between atoms adopting a tetrahedral geometry?
109.5
107
180
120
26
Which of the following has only London Dispersion Forces?
PH3
BH2Cl
CH4
H2O
27
Percent Composition of HCl ?
H= 13% Cl= 87%
H= 5% Cl= 95%
H= 3% Cl= 97%
H= 56% Cl= 44%
28
A substance with strong intermolecular forces of attraction would be expected to have
a low melting point
a high vapor pressure
a low boiling point
a low vapor pressure
29
What is the molar mass of Ca
3
(PO
4
)
2
?
310 g/mol
87 g/mol
247 g/mol
278 g/mol
30
The Lewis structure of AsH
3
shows __________ nonbonding electron pair(s) on As.
0
3
1
2
31
The metal is always the negative ion and is written second when naming ionic compounds
True
False
32
The molecular geometry of the H
3
O
+
ion is
linear
bent
trigonal pyramidal
tetrahedral
33
Which description below correctly describes BH
2
F?
BH2F is trigonal pyramidal and overall polar.
BH2F is trigonal pyramidal and overall nonpolar.
BH2F is trigonal planar and overall polar
BH2F is trigonal planar and overall nonpolar.
34
The weakest intermolecular forces is
Hydrogen bonding
Dipole-Dipole
London Dispersion Force
35
What is the formula of ammonium carbonate?
NH3CO3
NH4CO3
(NH4)2CO3
NH4(CO3)2
36
Empirical formula of a compound is N
2
O, what is the molecular formula if mass = 132.1 g/mol
N2O4
N2O
none of these
N6O3
37
What VSEPR geometry does BeH
2
form?
bent
linear
trigonal pyramidal
trigonal planar
38
The stronger the intermolecular forces, the...
higher the BP and MP
The lower the BP and higher the MP
lower the BP and MP
higher the BP and lower the MP
39
Ionic Bonds occur between what types of elements?
Metal + Metal
Metal + Nonmetal
Nonmetal + Nonmetal
None of the above
40
Which is a property of an Ionic compound?
Soft Solid
Poor conductor of heat
Soluble in water
High Boiling Point
41
The strongest intermolecular force in CO
2
is
Hydrogen Bonding
Dipole-Dipole
London Dispersion Force
42
What is the intermolecular force?
Dispersion
Hydrogen Bonding
Dipole-Dipole
43
What is the name for SO?
sulfur monoxide
sulfur oxide
sulfate
sulfur (II) oxide
44
Is the molecule polar or non-polar?
non-polar
polar
45
Ionic bonds ___________ electrons.
disappear
share
adopt
transfer
46
What is the name of Ca(OH)
2
calcium oxide
calcium (II) hydroxide
calcium (II) oxide
calcium hydroxide
47
Identify the bond types?
X is covalent
Y is metallic
Y is ionic
X is ionic
48
Which of the following are correct regarding a molecule with Hydrogen bonding?
high vapor pressure, high boiling point
low vapor pressure, low boiling point
high vapor pressure, low boiling point
low vapor pressure, high boiling point
49
Which statement explains why a C–O bond is more polar than a F–O bond?
The diff in electroneg between C-O greater than between F-O.
At STP, carbon has a greater density thanfluorine.
Carbon atom has more valence electrons than fluorine atom.
The diff in IE between C-O is greater thanF-O
50
What type of intermolecular force does HCl have?
Ion-Ion
Dipole-Dipole
London Dispersion
H Bonding
51
Intramolecular forces are ____________ than intermolecular forces.
Denser
Lighter
Weaker
Stronger
52
Bond angles of NH
4
+
?
100°
90°
109.5°
120°
53
What is the name for SnO
2
tin (IV) oxide
tin (II) oxide
tin oxide
snow
54
Of the following species, ____ will have bond angles of 120 degrees.
PH3
BCl3
NCl3
ClF3
55
Is the molecule polar or non-polar?
non-polar
polar
56
Why
do molecules make VSEPR shapes?
to minimize repulsion
to support molecules
to maximize bonding length
to make sure all atoms have eight valence electrons
57
Which compound contains both ionic and covalent bonds?
NaCN
CH2Br2
CaCl2
KI
58
Which of the following molecules would have the highest boiling point?
Cl2
BH3
CO
NH3
59
What is the empirical and molecular formulas of the molecule?
CH2O : CH2O
C3H2O3 : C3H6O3
CH2O : C3H6O3
C1.5H2O1.5 : CH2O
60
Which of the following is a polar molecule?
CO2
CH4
H2O
BF3
