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Grade 11 University Preparation Chemistry - Final Exam Review - BNC Flashcards | StudBud
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Grade 11 University Preparation Chemistry - Final Exam Review - BNC
Grade 11 University Preparation Chemistry - Final Exam Review - BNC
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Final exam review for College Prep Chemistry
Flashcards
45 cards
F
Practice quiz
P
Host live
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Questions
45
Answers
1
A covalent bond in which electrons are shared unequally is:
Polar
Ionic
Polyatomic
A double bond
2
If 3.0 L of helium at 20.0° C is allowed to expand to 4.4 L, what is the new temperature?
157°C
430°C
-30°C
702°C
3
A solution made from solid metals is called:
an allotrope
an alloy
an ally
an allegory
4
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
1:1
1:2
5
Cobalt (III) chloride reacts with lithium hydroxide in double replacement: which is a product?
Co(OH)3
LiCl3
LiCo3
Co(OH)2
6
What is the formula for sodium nitride?
NaN3
NaN
Na2N
Na3N
7
A chemical bond that is formed when two atoms share electrons is called a(n):
ionic bond
polyatomic bond
covalent bond
compound
8
How many valence electrons are in an atom of phosphorus?
3
4
2
5
9
If Al is limiting, how many grams of Cu form from reaction of 51 g of Al? 2 Al + 3 CuSO
4
--> Al
2
(SO
4
)
3
+ 3 Cu
81 g
180 g
2.8 g
0.045 g
10
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 Fe2O3 and 24 mol of Fe will form
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 limitng reactant is Fe2O3 and 36 mol of CO2 will form
11
The shape of the methane molecule, CH
4
, is:
square
tetrahedral
trigonal planar
bent
12
Given the reaction 2H
2
+ O
2
--> 2 H
2
O .......
110 L
77 L
61 L
19.25 L
13
How many moles of HCl are in 2.0 L of a 0.15 mol/L solution of HCl?
0.30 mol
0.25 mol
13.3 mol
0.075 mol
14
What are the missing coefficients for the equation: Cr + Fe(NO
3
)
2
--> Fe + Cr(NO
3
)
3
2,3,2,3
1,3,3,1
2,3,3,2
4,6,6,2
15
What is electronegativity?
ability to attract bonding electrons
distance from the nucleus to the valence electron
amount of energy required to remove a valece electron
amount of energy lost when an atom gains an electron
16
What are standard temperature and pressure conditions for gases?
0 K and 760 Torr
0°C and 760 torr
-273°C and 1 atm
0° and 0 torr
17
The reaction 2Fe + 3Cl
2
--> 2FeCl
3
is an example of which type of reaction?
single-replacement
synthesis
decomposition
combustion
18
How many moles of aluminum are needed to react completely with 1.2 mol of FeO? (*mole ratio*)
0.8 mole
2.4 mol
1.6 mol
1.2 mole
19
What is the chemical name for the compound with the formula Na
2
S?
Magnesium fluoride
Sodium fluoride
Sodium Sulfide
Lithium Oxide
20
The equation Mg + 2HCl --> MgCl
2
+ H
2
is an example of what type of reaction?
combination
decomposition
single-replacement
double-replacement
21
What causes dipole-dipole interaction?
attractions between ions
attractions between polar molecules
sharing electron pairs
bonding of a covalently bonded hydrogen to electrons
22
One way to increase the pressure of a gas is to
decrease temperature
increase volume
lower the kinetic energy of gas molecules
increase the number of gas particles
23
How much PH
3
is formed if you have 6.2 g of P
4
(H
2
is the excess reactant)? P
4
+ 6H
2
--> 4PH
3
6.8 g
.43 g
270 g
45 g
24
True or false: Hydrogen bonding results in low surface tension because it is the weakest bond
False
True
25
What is % yield if 9.9 g Pb(NO
3
)
2
are heated & give 5.5 g of PbO? 2Pb(NO
3
)
2
--> 2PbO + 4NO
2
+ O
2
44%
82%
56%
67%
26
A molecule with a single covalent bond is:
CO2
CO
N2
Cl2
27
What is the coefficient for Cl
2
in the equation: Fe + Cl
2
--> FeCl
3
2
4
3
1
28
The equation H
3
PO
4
+ 3KOH --> K
3
PO
3
+ 3H
2
O is best identified as what type of reaction?
single-replacement
neutralization
double displacement
synthesis
29
What is the coefficient for HCl in the equation: Mg + HCl --> MgCl
2
+ H
2
6
3
1
2
30
At STP, how many liters of oxygen will react with 3.6 liters of hydrogen? 2H
2
+ O
2
--> 2H
2
O
3.6 L
2.0 L
1.8 L
7.2 L
31
2 H
2
+ O
2
--> 2 H
2
O If oxygen is excess, what mass of water is produced from 2.0 mol of H
2
?
32 g
9 g
18 g
36 g
32
Which of the following covalent bonds is most polar?
H-H
H-C
H-F
H-N
33
How do gas particles respond to an increase in volume?
incrase in kinetic energy and decrease in temperature
increase in kinetic energy and increase in temperature
increase in temperature and increase in pressure
decrease in kinetic energy and decrease in pressure
34
What are the coefficients that will balance the equation: AlCl
3
+ NaOH --> Al(OH)
3
+ NaCl?
1,1,1,3
1,3,3,1
1,3,1,3
3,1,3,1
35
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
2.88 g
2.00 g
32.0 g
1.00 g
36
The number of moles per liter of a solution is defined as its:
molality
normality
molarity
absolute value
37
What are the coefficients that will balance the equation: N
2
+ H
2
--> NH
3
1,3,2
3,1,2
1,1,2
1,3,3
38
If temperature and moles are constant, the relationship between pressure and volume is
inverse
direct
39
If pressure and moles are constant, the relationship between temperature and volume is
inverse
direct
40
When aluminum nitrate reacts with lithium sulfate, the correct products would be:
AlLi2 and SO4(NO3)3
Al(NO3)3 and Li2SO4
Al2(SO4)3 and LiNO3
AlSO4 and Li2(NO3)3
41
Us the activity series to predict the products of: Ag + KNO
3
--> _____
AgNO3 + K
AgKNO3
AgK + NO3
No reaction
42
What is an isotope?
different electron amount and different atomic mass
same type of atom but different atomic number and different atomic mass
same type of atom but different neutron amount and different atomic mass
same atomic mass but different proton amount
43
The octet rule states that, in chemical compounds, atoms tend to have ____
more electrons than protons
the electron configuration of a noble gas
eight electrons in their principal energy level
more protons than electrons
44
Which of the forces of intermolecular attraction are the weakest?
hydrogen bonding
London dispersion
dipole-dipole
ionic bonding
45
What is a double bond?
A bond between two atoms and six electrons
Two pairs of electrons shared between four atoms
Two pairs of electrons shared between two atoms
One pair of electrons shared between two atoms
