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Final Exam Review Chemistry
Final Exam Review Chemistry
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Final exam review for College Prep Chemistry
Flashcards
53 cards
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Practice quiz
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Questions
53
Answers
1
Answer the following gas law problem
.0329 atm
.0658 kPa
.0658 atm
.0329 kPa
2
Nitrogen tri-chloride has the following VSEPR shape:
trigonal planar
bent
tetrahedral
trigonal pyramidal
3
How much PH
3
is formed if you have 6.2 g of P
4
and 4.0 g of H
2
: P
4
+ 6H
2
--> 4PH
3
270 g
.43 g
6.8 g
45 g
4
If 3.0 L of helium at 20.0° C is allowed to expant to 4.4 L, what is the new temperature?
430°C
-30°C
702°C
157°C
5
2 Al + 3 CuSO
4
--> Al
2
(SO
4
)
3
+ 3 Cu [how many grams of Cu form from reaction of 51g of Al?]
0.045 g
81 g
2.8 g
180 g
6
Which statement is true if 12 mol of CO and 12 mol of Fe
2
O
3
react? 3CO + Fe
2
O
3
--> 2Fe + 3CO
2
the limiting reactant is CO and 8.0 mol of Fe will be formed
the limiting reactant is CO and 3.0 mol of CO2 will form
The limiting reactant is Fe2O3 and 24 mol of Fe will form
The limitng reactant is Fe2O3 and 36 mol of CO2 will form
7
If pressure of a gas is increased and volume is constant, what will happen to temperature?
stay the same
decrease
increase
8
Carbon dioxide has the following VSEPR shape and polarity
Bent, Non-polar
Bent, non-polar
Linear, Non-polar
Linear, polar
9
How many moles of aluminum are needed to react completely with 1.2 mol of FeO? (*mole ratio*)
1.6 mol
0.8 mole
1.2 mole
2.4 mol
10
Cobalt (III) chloride reacts with lithium hydroxide in double replacement: which is a product?
Co(OH)2
Co(OH)3
LiCl3
LiCo3
11
True or false: Hydrogen bonding is the weakest IMF
True
False
12
What is the formula for sodium nitride?
Na3N
Na2N
NaN3
NaN
13
Which of the following is most polar?
H-N
H-H
CH4
SO3
14
Answer the following question using a gas law:
4.35 L
5.15 L
2.00 L
2.19 L
15
Predict the products of: Ag + KNO
3
--> _____
AgKNO3
AgNO3 + K
AgK + NO3
AgN + O2
16
The equation H
3
PO
4
+ 3KOH --> K
3
PO
3
+ 3H
2
O is what type of reaction?
synthesis
decomposition
single-replacement
double-replacement
17
What is the coefficient for Cl
2
in the equation: Fe + Cl
2
--> FeCl
3
4
3
1
2
18
The shape of methane, CH
4
, is:
tetrahedral
bent
trigonal planar
square
19
A chemical bond that is formed when two atoms share electrons is called a(n):
compound
polyatomic bond
ionic bond
covalent bond
20
The reaction 2Fe + 3Cl
2
--> 2FeCl
3
is an example of which type of reaction?
decomposition
synthesis
single-replacement
combustion
21
What is a double bond?
One pair of electrons shared between two atoms
Two pairs of electrons shared between two atoms
A bond between two atoms and six electrons
Two pairs of electrons shared between four atoms
22
True or false: N
2
is an example of a compound with a triple bond
False
True
23
What are standard temperature and pressure conditions for gases?
-273°C and 1 atm
0°C and 760 torr
0 K and 760 Torr
0° and 0 torr
24
How many grams of O
2
are produced if 11.5 g NO
2
are formed? 2Pb(NO
3
)
2
--> 2PbO + 4NO
2
+ O
2
1.00 g
2.00 g
32.0 g
2.88 g
25
Which of the forces of intermolecular attraction are the weakest?
dipole-dipole
hydrogen bonding
ionic bonding
london dispersion
26
How many valence electrons are in an atom of phosphorus?
5
3
2
4
27
What are the coefficients that will balance the equation: AlCl
3
+ NaOH --> Al(OH)
3
+ NaCl?
1,3,1,3
1,3,3,1
1,1,1,3
3,1,3,1
28
If pressure is constant, the relationship between temperature and volume is
direct
inverse
29
How many valence electrons are in an atom of magnesium?
5
2
4
3
30
Given the equation 2 H
2
+ O
2
--> 2H
2
O ........
4.075 L
8.15 L
8.15 mL
19.30 L
31
Given the reaction 2H
2
+ O
2
--> 2 H
2
O .......
19.25 L
110 L
61 L
77 L
32
At STP, how many liters of oxygen will react with 3.6 liters of hydrogen? 2H
2
+ O
2
--> 2H
2
O
1.8 L
2.4 L
2.0 L
3.6 L
33
One way to increase the pressure of a gas is to
decrease temperature
lower the kinetic energy of gas molecules
increase volume
increase the number of gas particles
34
What are the coefficients that will balance the equation: N
2
+ H
2
--> NH
3
1,3,3
3,1,2
1,1,2
1,3,2
35
The equation Mg + 2HCl --> MgCl
2
+ H
2
is an example of what type of reaction?
single-replacement
decomposition
double-replacement
combination
36
According to VSEPR, a central atom with four atoms bonded to it will have what shape?
tetrahedral
electrons closest to the nuclei
bent
trigonal planer
37
The octet rule states that, in chemical compounds, atoms tend to have ____
the electron configuration of a noble gas
more protons than electrons
more electrons than protons
eight electrons in their principal energy level
38
If temperature is constant, the relationship between pressure and volume is
direct
inverse
39
True or false: A double bond involves two pairs of electrons
False
True
40
How much sleep should you get the night before your exam?
more than 8hrs
I plan on sleeping through the exam
it depends on how much coffee is available in the morning
4hours is plenty
41
What is the chemical name for the compound with the formula Na
2
S?
Sodium Sulfide
Magnesium fluoride
Sodium fluoride
Lithium Oxide
42
Which of the following elements does NOT form an ion with a charge of +1?
sodium
fluorine
potassium
hydrogen
43
What are the missing coefficients for the equation: Cr + Fe(NO
3
)
2
--> Fe + Cr(NO
3
)
3
4,6,6,2
1,3,3,1
2,3,2,3
2,3,3,2
44
When aluminum nitrate reacts with lithium sulfate, the correct products would be:
Al(NO3)3 and Li2SO<font size="2">4</font>
AlSO4 and Li2(NO3)3
Al2(SO4)3 and LiNO3
AlLi2 and SO4(NO3)3
45
A molecule with a single covalent bond is:
N2
CO2
Cl2
CO
46
The element with the symbol Zn is called
Zingk
Zinck
Zinc
Zink
47
What causes dipole-dipole interaction?
attractions between ions
covalently bonded hydrogen atoms
attractions between polar molecules
sharing electron pairs
48
How do gas particles respond to an increase in volume?
increase in kinetic energy and increase in temperature
increase in temperature and increase in pressure
incrase in kinetic energy and decrease in temperature
decrease in kinetic energy and decrease in pressure
49
2 H
2
+ O
2
--> 2 H
2
O [what mass of water is produced from 2.0 mol of H
2
]
36 g
9 g
18 g
32 g
50
Carbon Monoxide has the following VSEPR shape
trigonal planar
tetrahedral
bent
linear
51
How much NO
2
is made when 9.9 g of Pb(NO
3
)
2
are decomposed? 2Pb(NO
3
)
2
--> 2PbO + 4NO
2
+ O
2
7g
700g
70g
0.7g
52
In the reaction 2CO + O
2
--> 2CO
2
what is the ratio of moles of oxygen to moles to CO
2
?
2:2
2:1
1:2
1:1
53
What is the coefficient for HCl in the equation: Mg + HCl --> MgCl
2
+ H
2
2
6
3
1
