WorksheetsAP Chemistry Unit 1
Total questions: 87
Worksheet time: 3hrs 3mins
Name
Class
Date
1.
thiocyanate
a)
SCN1-
b)
S2O32-
c)
CN1-
d)
ThCN1-
2.
carbonate
a)
CO32-
b)
CO22-
c)
CO3
d)
CO2
3.
CN1-
a)
cyanide
b)
cyanate
c)
carbon nitride
d)
cyanite
4.
thiosulfate
a)
S2O32-
b)
SO42-
c)
SCN1-
d)
ThSO42-
5.
permanganate
a)
MnO41-
b)
MnO32-
c)
MnO21-
d)
MnO1-
6.
perchlorate
a)
ClO41-
b)
ClO31-
c)
ClO21-
d)
ClO1-
7.
ClO21-
a)
chlorite
b)
chlorate
c)
hypochlorite
d)
hypochlorate
8.
ClO1-
a)
hypochlorite
b)
chlorate
c)
chlorite
d)
perchlorate
9.
hydrogen phosphate
a)
HPO42-
b)
H2PO42-
c)
HPO32-
d)
H2PO41-
10.
phosphite
a)
PO33-
b)
PO42-
c)
PO32-
11.
phosphate
a)
PO43-
b)
PO42-
c)
PO33-
d)
PO32-
12.
hydroxide
a)
HO-1
b)
OH-1
c)
HO
d)
OH
13.
acetate
a)
C2H3O2-1
b)
Ac-1
c)
CH2COO-1
d)
C4H4O62-
14.
peroxide
a)
O22-
b)
O2-
c)
O21-
d)
O1-
15.
nitrite
a)
NO21-
b)
NO31-
c)
NO3
d)
NO2
16.
nitrate
a)
NO3-1
b)
NO2-1
c)
NO3
d)
NO2
17.
sulfite
a)
SO32-
b)
SO42-
c)
SO3
d)
SO4
18.
chromate
a)
CrO42-
b)
Cr2O72-
c)
CrO41-
d)
Cr2O71-
19.
Sulfate
a)
SO42-
b)
SO32-
c)
SO4
d)
SO3
20.
ammonium
a)
NH4+
b)
NH4
c)
NH3
d)
NH3-
21.
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
22.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
23.
When does a chemical reaction stop?
a)
When the lab is finished
b)
When the excess reactant is used up
c)
When the limiting reactant is used up
d)
Chemical reactions never stop
24.
Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl2.
Mg + 2HCl --> MgCl2 + H2
Mg + 2HCl --> MgCl2 + H2
a)
Mg
b)
H2
c)
MgCl2
d)
HCl
25.
Fe (s) + S (l) --> FeS (s)
In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?
In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?
a)
14.8 g
b)
12.2 g
c)
13.7 g
d)
19.9 g
26.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
27.
What is a Excess Reagent?
a)
amount you end with
b)
what you run out of first
c)
what you have left over
d)
what you start with
28.
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
29.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
30.
Which of the following is not a polyatomic ion?
a)
hydride
b)
hydroxide
c)
cyanide
d)
sulfate
31.
How many liters of NH3 are needed to react completely with 30.0L of NO at STP?
4NH3+6NO --> 5N2 + 6H2O
4NH3+6NO --> 5N2 + 6H2O
a)
5.0 L
b)
20.0 L
c)
7.5 L
d)
120.0 L
32.
Consider the Equation:
2H2 + O2 −−〉 2H2O
How many moles of water can be formed from 3.91 g of O2?
2H2 + O2 −−〉 2H2O
How many moles of water can be formed from 3.91 g of O2?
a)
1.905
b)
.244
c)
2.2
d)
1.1
33.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
34.
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements. (keep two decimal places throughout calculations)
a)
SO
b)
SO2
c)
SO3
d)
SO4
35.
What is the empirical formula if you have 88.80% copper and 11.20% oxygen?
a)
Cu3O8
b)
CuO4
c)
Cu2O
d)
Cu4O10
36.
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
a)
NaPO2
b)
Na2PO3
c)
Na3PO4
d)
NaPO4
37.
How many grams are in 2.25 moles of propane, C3H8.
a)
99 g
b)
16.0 g
c)
0.051 g
d)
96.0 g
38.
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%
39.
What is the empirical formula for the following molecular formula: C5H12
a)
C5H12
b)
CH3
c)
CH2
d)
C2.5H6
40.
What is the empirical formula for the following molecular formula: C6H14
a)
C6H14
b)
C3H7
c)
CH2
d)
CH3
41.
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
42.
6.8 mi =____ft
a)
35904 ft
b)
11968 ft
c)
997.33 ft
d)
2992 ft
43.
10 yd = ____in
a)
0.83 in
b)
360 in
c)
120 in
d)
0.28 in
44.
14.42mm = _____m
a)
1442 m
b)
0.01442 m
c)
14420 m
d)
0.144 m
45.
3 m = _____ yd
a)
3.3 yd
b)
2.7yd
c)
0.4yd
d)
0.3yd
46.
40m2 = _____ft2
a)
360
b)
44.44
c)
444.44
d)
36
47.
Convert to scientific notation.
a)
3.2 x 104
b)
3.3 x 103
c)
3.3 x 10-4
d)
3.2 x 10-3
48.
What conversion factor would you use to solve this problem?
a)
2.20 lbs / 1 kg
b)
1 kg / 2.20 lbs
c)
0.002 lbs / 1 g
d)
1 g / 0.002 lbs
49.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
50.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
51.
How many significant figures does the following number have: 100.00210
a)
7
b)
5
c)
10
d)
8
52.
Round 0.010229 to four significant figures
a)
1022
b)
1023
c)
0.01023
d)
0.01022
53.
How many significant figures does the measurement in 10.0 grams have>
a)
1
b)
infinite
c)
3
d)
2
54.
How many significant figures are in the measurement 48032 m?
a)
5
b)
4
c)
3
d)
2
55.
What two types of measurements make up DENSITY?
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
56.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
57.
What units can be used to express density?
a)
g/mL
b)
grams
c)
millimeters
d)
milliliters
58.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
59.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
60.
Name the acid: H3PO4
a)
Phosphoric Acid
b)
Phosophorous Acid
c)
Hydrophosphoric Acid
d)
Hydrophosphorous Acid
61.
Name the acid: HNO2
a)
Hydrogen Nitrite
b)
Nitrous Acid
c)
Nitric Acid
d)
Hydronitric acid
62.
What is the formula for: Tetraphosphorous pentachloride
a)
P4Cl5
b)
P5CL4
c)
Cl4P5
d)
Cl5P4
63.
What is the formula for Hexaboron Monosilicide
a)
B6Si
b)
BSi
c)
BSi6
d)
B6Si6
64.
What's the formula for chlorine dioxide
a)
ClO2
b)
CLO
c)
ClO3
d)
HClO2
65.
What is the name for CaCl2?
a)
Calcium Chloride
b)
Calcium Monochloride
c)
Calcium (II) Chloride
d)
Calcium Chlorite
66.
What is the name for CaCO3
a)
Calcium (II) Carbide
b)
Calcium Carbonite
c)
Calcium Monocarbon Trioxide
d)
Calcium Carbonate
67.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
68.
What is the formula for Titanium (II) Oxide
a)
TiO
b)
Ti2O
c)
TiO2
d)
Ti2O2
69.
What is the formula for: Antimony tribromide
a)
SbBr3
b)
Sb3Br
c)
SbBr
d)
Sb3Br3
70.
What is the name of PdO2?
a)
palladium (IV) oxide
b)
palladium oxygen
c)
palladium oxide
d)
palladium (II) oxide
71.
What is the name of Ca3N2?
a)
calcium nitrogen
b)
carbon nitrogen
c)
calcium nitride
d)
carbon nitrate
72.
What is the name of NH4Cl?
a)
nitrogen tetrahydrogen chloride
b)
ammonium chlorine
c)
ammonium chloride
d)
ammonium chlorate
73.
What are SI Units?
a)
The measurement of a surface
b)
International System of Units
74.
Which is bigger, Mg or g? (hint: Mg = Megagram!)
a)
Mg
b)
g
75.
What SI unit is used to measure temperature?
a)
seconds
b)
amperes
c)
Kelvin
d)
mole
76.
What SI unit is used to measure time?
a)
seconds
b)
amperes
c)
Kelvin
d)
mole
77.
What SI unit is used to measure volume?
a)
meters
b)
liters
c)
candelas
d)
kilograms
78.
What SI unit is used to measure length?
a)
meters
b)
liters
c)
candelas
d)
kilograms
79.
What SI unit is used to measure light intensity?
a)
meters
b)
liters
c)
candelas
d)
kilograms
80.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
81.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
82.
How many significant figures does the following number have: 100.00210
a)
7
b)
5
c)
10
d)
8
83.
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.095 m2
84.
Calculate 7.987 m - 0.54 m and give your answer with the correct number of significant figures.
a)
7.45 m
b)
7.447 m
c)
7.4 m
d)
7.5 m
85.
Calculate 345.009 g - 23.00 g and give your answer with the correct number of significant figures.
a)
322.01 g
b)
322 g
c)
322.009 g
d)
322.0
86.
Calculate 12.34 + 1.234 + 0.1234 and give your answer with the correct number of significant figures.
a)
13.6974
b)
13.697
c)
13.70
d)
13.7
87.
Calculate 5.50 cm + 5.5 cm and give your answer with the correct number of significant figures.
a)
11 cm
b)
11.0 cm
c)
11.00 cm
d)
11.000 cm
100 %
