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WorksheetsReview for Pre-AP Chemistry Part 2
Total questions: 145
Worksheet time: 8hrs 34mins
Name
Class
Date
1.
What is the formula for Sulfur hexafluoride?
a)
SF6
b)
S6F5
c)
S6F8
d)
SF9
2.
What is the formula for Dihydrogen monoxide?
a)
H3O2
b)
H8O3
c)
H2O
d)
HO2
3.
What is the formula for Tribromine nonoxide?
a)
Br3O9
b)
Br3O10
c)
Br3O6
d)
Br3O4
4.
What is the name of this ion: SO32-
a)
sulfite
b)
sulfate
c)
phosphate
d)
phosphite
5.
What is the name of this ion: CO32-
a)
chlorate
b)
chlorite
c)
chromate
d)
carbonate
6.
What is the name of this ion: PO43-
a)
phosphite
b)
phosphate
c)
perchlorate
d)
permanganate
7.
What is the name of this ion? OH-
a)
hypochlorite
b)
hydroxide
c)
carbonate
d)
perchlorate
8.
What is the name of this ion: NH4+
a)
dichromate
b)
ammonium
c)
cyanide
d)
hydroxide
9.
What is the formula for potassium chromate
a)
K2CrO4
b)
K2Cr
c)
KCr2
d)
K(CrO4)2
10.
What is the name for MgF2 ?
a)
magnesium fluoride
b)
manganese Phosphide
c)
magnesium(III) fluoride
d)
magnesium fluoride(II)
11.
What is the formula for calcium phosphide?
a)
CaP
b)
Ca2P3
c)
Ca3P2
d)
Ca2P
12.
The formula for magnesium cyanide is...
a)
Mg(CN)2
b)
MgCN2
c)
MgCN
d)
(Mg)2CN
13.
What is the formula for phosphorous acid?
a)
H3PO4
b)
H2PO4
c)
H3P
d)
H3PO3
14.
what is the formula for Copper (IV) Oxide?
a)
CaO2
b)
Cu2O4
c)
Cu4O2
d)
CuO2
15.
When calcium binds with iodine, the compound formed is
a)
CaI
b)
Ca₂I
c)
CaI₂
d)
Ca₂I₂
16.
CO
a)
Carbon Oxide
b)
Carbon Oxygen
c)
Dicarbon dioxide
d)
Carbon Monoxide
17.
PBr5
a)
Phosphorus Bromide
b)
Phosphorus Pentabromide
c)
Pentaphosphorus bromide
d)
Phosphorus Bromine
18.
If magnesium binds with oxygen, what compound forms? (use your periodic table)
a)
MgO
b)
Mg₂O
c)
Mg₂O₂
d)
MgO₂
19.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCL
20.
what is the name of CCl4?
a)
carbon tetrachloride
b)
monocarbon tetrachloride
c)
tetracarbon monochloride
d)
carbon chloride
21.
what is the name of CrMnO4
a)
Chromium Manganese Tetraoxide
b)
Chromium Permanganate
c)
Chromium (IV) Permanganate
d)
Chromium (I) Permanganate
22.
chromium (III) nitrate
a)
Cr3N2
b)
Cr2N
c)
Cr2NO3
d)
Cr(NO3)3
23.
hydrochloric acid
a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
24.
H2SO3
a)
sulfuric acid
b)
hydrosulfuric acid
c)
sulfurous acid
d)
persulfuric acid
25.
HF
a)
flouric acid
b)
hydrofluoric acid
c)
fluorate acid
d)
hydrogen fluoridic acid
26.
HI
a)
iodic acid
b)
hydroiodic acid
c)
iodous acid
d)
hypoiodous acid
27.
chlorous acid
a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
28.
carbonic acid
a)
H2CO3
b)
H2CrO4
c)
H2C2O4
d)
HCO3
29.
bromic acid
a)
HBr
b)
H2Br
c)
HBrO3
d)
HBrO4
30.
nitrous acid
a)
H2NO3
b)
HNO3
c)
HNO2
d)
H2NO2
31.
What is oxidation number of H in H2O?
a)
0
b)
-2
c)
-1
d)
+1
32.
What is oxidation number of Cr in Cr2O72-?
a)
-2
b)
+2
c)
+6
d)
+12
33.
What is oxidation number of P in K3PO4?
a)
+1
b)
+5
c)
-2
d)
0
34.
What is oxidation number of H in CaH2?
a)
+1
b)
-1
c)
0
d)
+2
35.
What is oxidation number of Fe in FeO ?
a)
+2
b)
-2
c)
0
d)
+1
36.
What is oxidation number of Ca in CaCl2 ?
a)
-1
b)
-2
c)
+1
d)
+2
37.
What is oxidation number of O in O2 ?
a)
0
b)
-2
c)
+1
d)
+2
38.
What is oxidation number of O in H2O2 ?
a)
-2
b)
-1/2
c)
+1
d)
-1
39.
What is oxidation number of Na in Na+ ?
a)
0
b)
+1/2
c)
+1
d)
-1
40.
What is oxidation number of Mn in MnO2 ?
a)
0
b)
+2
c)
-2
d)
+4
41.
What is the oxidation number of Fe in FeO?
a)
+1
b)
-1
c)
+2
d)
-2
42.
What is oxidation number of P in K3PO4?
a)
+1
b)
+5
c)
-2
d)
0
43.
What is oxidation number of Na in Na+ ?
a)
0
b)
+1/2
c)
+1
d)
-1
44.
What element always has an oxidation number of -1?
a)
Hydrogen
b)
Fluorine
c)
Chlorine
d)
Iodine
45.
What is the oxidation number of Br in BrO3-1?
a)
+3
b)
-2
c)
+5
d)
+2
46.
In the reaction Zn + H2O --> ZnO2 + H2
which element, if any, is oxidized?
which element, if any, is oxidized?
a)
Zinc
b)
Hydrogen
c)
Oxygen
d)
None
47.
In the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
a)
Reduced
b)
Synthesized
c)
Oxidized
d)
None of the above
48.
Oxidation involves
a)
gaining electrons; gaining oxygen
b)
losing electrons; losing oxygen
c)
gaining electrons; losing oxygen
d)
losing electrons; gaining oxygen
49.
Reduction involves
a)
gaining electrons; gaining oxygen
b)
losing electrons; losing oxygen
c)
gaining electrons, losing oxygen
d)
losing electrons; gaining oxygen
50.
In the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
a)
Reduced
b)
Synthesized
c)
Oxidized
d)
None of the above
51.
Is calcium oxidized or reduced in the following reaction?
2CaO--> 2Ca + O2
2CaO--> 2Ca + O2
a)
Oxidized
b)
Reduced
52.
Which substance is reduced in the following reaction?
NaOH + Li --> LiOH + Na
NaOH + Li --> LiOH + Na
a)
Li
b)
Na
c)
O
d)
H
53.
Which of the following is the balanced half -reaction for the oxidation of Cu to Cu+2?
a)
Cu --> Cu+2
b)
Cu + 2 e- --> Cu+2
c)
Cu --> Cu+2 + 2 e-
d)
Cu - 2e- --> Cu+2
54.
Another name for a "oxidation-reduction" reaction is
a)
chemical reaction
b)
neutralization reaction
c)
redox reaction
d)
nuclear reaction
55.
How would you write the electrons in the reaction O2 --> O2-2 ?
a)
+2e- on the products
b)
+2e- on the reactants
c)
+e- on the products
d)
+e- on the reactants
56.
What is the molar mass of NaCl?
a)
1.5 g/mol
b)
22.99 g/mol
c)
58 g/mol
d)
0.22 mol/g
57.
What is the molar mass of C3H8?
a)
44 g/mol
b)
0.44 mol
c)
4.4 g/mol
d)
4.4 g
58.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
a)
2 moles Fe
b)
1 moles Fe
c)
9 moles Fe
d)
4 moles Fe
59.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the mole ratio of MgO to Fe?
a)
1 mol Mg / 2 mol Fe
b)
2 mol Mg / 3 mol Fe
c)
1 mol Fe / 2 mol Mg
d)
3 mol MgO / 2 mol Fe
60.
2H2 + O2 → 2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2 mol
b)
4 mol
c)
6 mol
d)
8 mol
61.
How many grams of oxygen gas is produced from 202g of potassium nitrate?
2KNO3 --> 2KNO2 + O2
2KNO3 --> 2KNO2 + O2
a)
16
b)
64
c)
100
d)
32
62.
What is the first thing you must do to solve a stoichiometry problem?
a)
Write a Balanced Equation
b)
Solve for the Unknown
c)
Write the mole ratio
d)
Solve for mass of A (known)
63.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
64.
How many grams are in one mole of Oxygen gas (O2)
a)
16 g/mol
b)
32 g/mol
c)
2 g/mol
d)
1/16 g/mol
65.
What is the molar mass of CH4
a)
16.05
b)
4.04
c)
12.01
d)
32.32
66.
2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
53 grams of NaClO3 will produce how many grams of NaCl?
(Molar Mass: NaClO3 = 106g, NaCl = 58g and O2 = 32g)
a)
29.0 g of NaCl
b)
19.3 g of NaCl
c)
43.5 g of NaCl
67.
2H2 + O2 → 2H2O
How many grams of water can be produced if 4.0 moles H2 are used?
(Molar Mass = H2 = 2g, O2 = 32g and H2O = 18g)
a)
0.89g
b)
72.0 g
c)
8.0 g
d)
13.33g
68.
The limiting reactant
a)
speeds up the chemical reaction
b)
is the first reactant to run out
c)
is the reactant that is left over
69.
When does a chemical reaction stop?
a)
When the temperature of the reaction drops
b)
When the excess reactant is used up
c)
When the limiting reactant is used up
d)
Chemical reactions never stop
70.
Use the equation 2 Al + 3 Cl2 ---> 2 AlCl3. If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.
a)
AlCl3
b)
Cl2
c)
Al
71.
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
Actual yield = 62g
Calculate the percent yield.
a)
1.16%
b)
116%
c)
85%
d)
76%
72.
P4 + 3O2 --> P4O6
What is the limiting reactant is 12 moles of P4 react with 15 moles of O2?
What is the limiting reactant is 12 moles of P4 react with 15 moles of O2?
a)
P4
b)
O2
c)
P4O6
d)
none of the above
73.
What is the theoretical yield?
a)
the maximum amount of product from a reaction
b)
the amount of product recovered from a lab experiment
c)
amount of product that causes the reaction to stop
d)
the amount of product needed to reverse the reaction
74.
In the equation 6 CO2 + 6 H2O → C6H12O6 + 6 O2, the mole ratio of water to oxygen is:
a)
6:6
b)
1:6
c)
6:1
75.
How many grams are in 7.8 moles of NaCl?
a)
476grams
b)
460 grams
c)
453 grams
d)
462 grams
76.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
77.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
78.
How many particles would be in 8.4 moles of Octane (C8H18)?
a)
5.77 x 1023
b)
5.04 x 1024
c)
5.77 x 1026
d)
5.04 x 1023
79.
How many molecules are in 32.4 grams of phosphorous pentoxide?
a)
1.76 x 1023 molecules
b)
0.29 moles
c)
1.76 x 1022 molecules
d)
0.29 molecules
80.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
81.
How many molecules are present in 25 g of NaBr?
a)
102.96 molecules
b)
0.24 molecules
c)
1.45x1023 molecules
d)
2.34 x 1020molecules
82.
What can be determined from a balanced chemical equation?
a)
Mole ratio of any two substances in the reaction
b)
Energy released in the reaction.
c)
Electron configuration of all elements in the reaction.
d)
Mechanism involved in the reaction.
83.
What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?
a)
C2H5
b)
C4H10
c)
C1H2.5
d)
C4H8
84.
Find the percent composition of N2S2.
a)
N: 69.6% S: 30.4%
b)
N:36% S: 75.6%
c)
N: 96.6% S: 3.4%
d)
N: 30.4% S: 69.6%
85.
Find the percent composition of Mg in Mg3(PO4)2.
a)
27.75% Mg
b)
23.57% Mg
c)
48.68% Mg
d)
13.45% Mg
86.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
87.
In this image, what are the information in red or orange is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
88.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
89.
Whats the empirical formula of a molecule containing 18.7% of Lithium, 16.3% of Carbon and 65.0% of oxygen?
a)
CO2Li3
b)
Li2CO3
c)
Li3CO2
d)
LiCO5
90.
Find the percent composition of hydrogen in ammonium sulfide.
a)
11.8%
b)
41.1%
c)
47.1%
91.
Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?
a)
A
b)
B
c)
C
d)
D
92.
If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the
a)
theoretical yield
b)
mole ratio
c)
actual yield
d)
percentage yield
93.
A formula with the lowest whole # ratio of elements in a compound is called
a)
empirical formula
b)
chemical formula
c)
covalent formula
d)
molecular formula
94.
KMnO4
a)
Empirical
b)
Molecular
95.
C2H6
a)
Empirical
b)
Molecular
96.
Which is limiting for the reaction below:
3 A + 4B + 2C --> A3B4C2
If you start with the following quantities:
10 moles of A
9 moles of B
6 moles of C
3 A + 4B + 2C --> A3B4C2
If you start with the following quantities:
10 moles of A
9 moles of B
6 moles of C
a)
A is limiting
b)
B is limiting
c)
C is limiting
d)
None are limiting
97.
Fe + S --> FeS
How many moles of FeS are formed from 2 moles of Fe reacted with excess S?
a)
1 mole
b)
3 moles
c)
2 moles
d)
4 moles
98.
If 15 grams of copper (II) chloride react with 20 grams of sodium nitrate, how much sodium chloride can be formed?
a)
13.04 g
b)
130.4 moles
c)
130.4 g
d)
13.04 moles
99.
How many grams of ammonia (NH3) can be produced from the reaction of 28 g of nitrogen gas and 25 grams of hydrogen gas?
a)
43 g
b)
34 moles
c)
25 grams
d)
34 grams
100.
Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl2.
Mg + 2HCl --> MgCl2 + H2
a)
Mg
b)
H2
c)
MgCl2
d)
HCl
101.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
102.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
103.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
104.
Balance this equation-
__P4 + __O2 --> __P2O3
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
105.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
106.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
107.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
108.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
109.
What does the Law of Conservation of Matter state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
110.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
111.
What is the arrow in a chemical equation...
H2 + O --> H2O
H2 + O --> H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
112.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
113.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
114.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
115.
Predict the products (right side) of this reaction reaction,
Ca + 2HCl --> ?
Ca + 2HCl --> ?
a)
4CaCl3 + H2
b)
no reaction
c)
CaH2 + Cl
d)
CaCl2 + H2
116.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know???
d)
None of the answers are correct
117.
What is the little number after an element in a chemical equation called. Shown in red below
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
118.
What is oxidation number of Ca in CaCl2 ?
a)
-1
b)
-2
c)
+1
d)
+2
119.
What is oxidation number of O in O2 ?
a)
0
b)
-2
c)
+1
d)
+2
120.
What is the oxidation number of Ca in Ca3N2?
a)
+3
b)
+2
c)
-3
d)
-2
121.
NH4NO3
a)
soluble
b)
insoluble
122.
AgCl
a)
soluble
b)
insoluble
123.
FeS
a)
soluble
b)
insoluble
124.
Ca(OH)2
a)
soluble
b)
insoluble
125.
BaSO4
a)
soluble
b)
insoluble
126.
CaCO3
a)
soluble
b)
insoluble
127.
What is Solubility?
a)
What is dissolved
b)
What does the dissolving
c)
A measure of how much solute can dissolve in solvent
d)
a charged ion
128.
What is the precipitate formed when you mix silver nitrate with copper chloride?
a)
copper nitrate
b)
copper chloride
c)
silver chloride
d)
silver nitrate
129.
Which of these lists contains only soluble substances?
a)
sodium nitrate, potassium chloride, calcium carbonate
b)
lead nitrate, lead chloride, lead sulfate
c)
calcium nitrate, copper chloride, ammonium phosphate
d)
silver nitrate, barium sulfate, copper carbonate
130.
Which list contains only precipitates?
a)
copper hydroxide, lead iodide, calcium carbonate
b)
calcium nitrate, lead sulfate, barium phosphate
c)
sodium nitrate, calcium hydroxide, iron (III) hydroxide
131.
What is the precipitate formed between potassium bromide and ammonium sulfide
a)
potassium sulfide
b)
ammonium bromide
c)
potassium ammonium
d)
no ppt is formed
132.
What is the name of the precipitate formed in the reaction of calcium sulfide and aluminum nitrate
a)
calcium nitrate
b)
aluminum sulfide
c)
no ppt is formed
d)
aluminum nitrate
133.
KBr
a)
Soluble
b)
Insoluble
134.
Zinc Hydroxide
a)
Soluble
b)
Insoluble
135.
Silver Iodide
a)
Soluble
b)
Insoluble
136.
PbI2
a)
Soluble
b)
Insoluble
137.
NaC2H3O2
a)
soluble
b)
insoluble
138.
What are always soluble?
a)
Nitrates
b)
Phosphates
c)
Carbonates
d)
Hydroxides
139.
What are the spectator ions in this reaction?
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
a)
Cu2+ and OH1-
b)
Na2+ and Cl2-
c)
Na1+ and Cl1-
d)
Na1+ and OH1-
140.
What precipitate forms when you mix lead (II) nitrate with sodium chloride?
a)
sodium nitrate
b)
lead (II) chloride
c)
sodium lead
d)
chloride nitrate
141.
Which of the following does NOT form a precipitate?
a)
AgNO3(aq) + 2KBr(aq) →
b)
LiNO3 (aq) + NaC2H3O2(aq) →
c)
Ca(NO3)2(aq) + K2CO3(aq) →
d)
Ba(NO3)2 (aq) + Na2SO4(aq) →
142.
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
a)
Ca2+(aq) + 2Cl1- (aq) → CaCl(s)
b)
Ag+(aq) + Cl1- (aq) → AgCl(s)
c)
Ag + Cl → AgCl
d)
Ag+ + Ca2+ →Ag2Ca (s)
143.
What precipitate forms when you mix barium nitrate with sodium sulfate?
a)
sodium nitrate
b)
barium nitrate
c)
barium sulfate
d)
sodium sulfate
144.
In this equation,
CuCl2 + NaOH → Cu(OH)2 + NaCl
Which product is insoluble?
CuCl2 + NaOH → Cu(OH)2 + NaCl
Which product is insoluble?
a)
copper(II) hydroxide
b)
sodium chloride
c)
sodium hydroxide
d)
copper(II) chloride
145.
What is the result of the reaction between potassium bromide and ammonium sulfide?
a)
potassium sulfide precipitates
b)
ammonium bromide precipitates
c)
potassium ammonium precipitates
d)
no precipitate is formed
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