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WorksheetsChemistry Midterm Review
Total questions: 68
Worksheet time: 1hrs 27mins
Name
Class
Date
1.
What is the following: Ag
a)
Atom
b)
Molecule
c)
Formula Unit
2.
What is the following: KCl
a)
Atom
b)
Molecule
c)
Formula Unit
3.
What is the following: NO2
a)
Atom
b)
Molecule
c)
Formula Unit
4.
How many O's are in Na2(H2O)3
a)
2
b)
5
c)
6
d)
3
5.
P3-
a)
formula unit
b)
molecule
c)
atom
d)
ion
6.
N2O4
a)
molecule - 3 atoms
b)
molecule - 6 atoms
c)
molecule - 2 atoms
d)
not a molecule
7.
Ca3N2
a)
formula unit - 3 ions
b)
formula unit - 5 ions
c)
formula unit - 2 ions
d)
not a formula unit
8.
Na2SO4
a)
molecule - 3 atoms
b)
molecule - 7 atoms
c)
formula unit - 3 ions
d)
formula unit - 7 ions
9.
Al+3 + (PO4)-3
a)
Al(PO3)4
b)
AlPO4
c)
Al(PO4)3
10.
MgF2
a)
magnesium fluoride
b)
manganese Phosphide
c)
magnesium(III) fluoride
d)
magnesium fluoride(II)
11.
What is the formula for lead (II) phosphate
a)
PbPO4
b)
Pb2PO4
c)
Pb3(PO4)2
d)
Pb2(PO4)3
12.
What is the name of FeSO4?
a)
Iron Sulfite
b)
Iron (II) Sulfite
c)
Iron(IV) Sulfate
d)
Iron (II) Sulfate
13.
Name the compound:
NO2
NO2
a)
nitrogen dioxide
b)
nitrite
c)
mononitrogen dioxide
d)
dioxygen mononitrogen
14.
What is the formula for nitric acid?
a)
HNO2
b)
HNO3
c)
HNO4
d)
H2NO3
15.
What is the formula for hydrochloric acid?
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
16.
What is the formula for chloric acid?
a)
H3ClO3
b)
H3ClO4
c)
HClO3
d)
HClO4
17.
Ionic or covalent?
C O
C O
a)
Ionic
b)
Covalent
18.
Ionic or covalent?
Na Br
Na Br
a)
Ionic
b)
Covalent
19.
What is the rule for figuring out if it is ionic or covalent?
a)
Covalent bonds form between two metals.
b)
Ionic bonds form between two metals.
c)
Covalent bonds form between a metal and a non-metal.
d)
Ionic bonds form between a metal and a non-metal.
20.
Which is most likely to form a negative ion?
a)
an element from group 17
b)
a metal
c)
an element from group 1
d)
an element with atoms that have eight valence electrons
21.
Which of the following has six valence electrons?
a)
Sodium
b)
Iodine
c)
Oxygen
d)
Neon
22.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
23.
How many dots would a Lewis Dot structure of Helium have?
a)
1
b)
2
c)
8
d)
0
24.
How many electrons does each line in a Lewis structure indicate are shared?
a)
1
b)
2
c)
3
d)
4
25.
How many electrons should phosphorus have around its Lewis dot model?
a)
2
b)
4
c)
5
d)
7
26.
A bond where electrons are NOT shared equally?
a)
polar covalent
b)
nonpolar covalent
27.
A bond where electrons ARE shared equally?
a)
polar covalent
b)
nonpolar covalent
28.
Draw SO2 and determine its polarity and shape.
a)
nonpolar, linear
b)
polar, bent
c)
nonpolar, bent
d)
nonpolar, trigonal planar
29.
Which group has elements with very low ionization energies.
a)
Group 1A
b)
Group 2A
c)
Group 7A
d)
Group 8A
30.
Which atom is larger?
a)
Sodium
b)
Potassium
c)
Lithium
d)
Francium
31.
Which atom wants to gain 1 electron?
a)
Sodium
b)
Fluorine
c)
Neon
d)
Iron
32.
The element with the smallest ionization energy in Period 6 is -
a)
Rn
b)
Cs
c)
Os
d)
Tm
33.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
34.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
35.
Write a Balanced Equation for this reaction:
C2H4 + 2 O2 -->
C2H4 + 2 O2 -->
a)
C2O2 + H4
b)
CO2 + HOH
c)
CO + H
d)
2 CO2 + 2H2O
36.
Write a balanced equation for this DR reactions
NaOH + Fe(NO3)3 -->
NaOH + Fe(NO3)3 -->
a)
NaFe + OH(NO3)3
b)
2NaNO3 + 3Fe(OH)3
c)
NaNO3 + FeOH
d)
3NaNO3 + Fe(OH)3
37.
What are the products of this single replacement reaction: Fe + Na2CO3 ?
a)
Na2 + Fe(CO3)2
b)
Na + CO3Fe
c)
Na + Fe2CO3
d)
No Reaction
38.
Which compound is higher in reactivity, Ag or Ca?
a)
Ag
b)
Ca
c)
Neither
d)
They're equal
39.
What is the empirical formula for a compound containing: 92.30% carbon and 7.70% hydrogen
a)
CH
b)
CH4
c)
C2H8
d)
C2H4
40.
A compound came out with the following ratio
3 Carbon: 1.49 Phosphorus: 2 Oxygen- what would be the empirical formula?
3 Carbon: 1.49 Phosphorus: 2 Oxygen- what would be the empirical formula?
a)
Ca6P3O4
b)
C3PO2
c)
C6P3O4
d)
C3P3O2
41.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
42.
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
a)
K2SO4
b)
K8SO16
c)
K8S4O8
d)
K8S4O16
43.
How many liters are in 19.8 g Mg(OH)2?
a)
10.75 liters
b)
10.7 liters
c)
7.7 liters
d)
7.61 liters
44.
What are the units for molar mass?
a)
grams
b)
amu
c)
grams/mole
d)
liters
45.
What is 78.5 rounded to one significant figure?
a)
79
b)
78.5
c)
70
d)
80
46.
What is 0.658 rounded to 1 significant figure?
a)
0
b)
0.66
c)
0.7
d)
0.658
47.
What is 0.000328 rounded to 1 significant figure?
a)
0
b)
0.0003
c)
0.00033
d)
0.000328
48.
What is 98.907 rounded to 1 significant figure?
a)
98.9
b)
90
c)
100
d)
98.91
49.
Determine the number of Significant Figures in 10.0-g
a)
5
b)
4
c)
3
d)
2
50.
Determine the number of Significant Figures in 1.0 x 101-g.
a)
5
b)
4
c)
3
d)
2
51.
Determine the number of Significant Figures in 48032-m3.
a)
5
b)
4
c)
3
d)
2
52.
How many sig figs are there?
4000.
4000.
a)
1
b)
3
c)
4
53.
How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645
7.62 x 6.98 x 3.2645
a)
1
b)
2
c)
3
d)
4
54.
Solve. Round using SigFig math rules.
98.7°C - 97.25°C
98.7°C - 97.25°C
a)
1°C
b)
1.4°C
c)
1.45°C
d)
1.450°C
55.
Solve. Round using SigFig math rules.
12.5-mL + 20.05-mL + 2.69-mL
12.5-mL + 20.05-mL + 2.69-mL
a)
35-mL
b)
35.2-mL
c)
35.24-mL
d)
35.240-mL
56.
At 10 atm, dry ice is heated from -100 °C to 30 °C. What changes occur?
a)
freezing, then condensation
b)
melting only
c)
sublimation only
d)
melting, then boiling
57.
What state of matter is Y?
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
58.
What state of matter is Z?
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
59.
What change occurs from F to E?
a)
sublimation
b)
deposition
c)
melting
d)
condensation
60.
What change occurs from E to C?
a)
sublimation
b)
freezing
c)
melting
d)
boiling
61.
What is the normal boiling point of this substance?
a)
150 °C
b)
100 °C
c)
-50 °C
d)
0 °C
62.
What is point A?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
63.
What is point B?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
64.
At 0.10 atm, what phase(s) can exist?
a)
solid, liquid or gas
b)
liquid or gas
c)
solid only
d)
gas only
65.
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
66.
KNO3 --> KNO2 + O2
What coefficients are needed to balance the reaction?
What coefficients are needed to balance the reaction?
a)
2, 2, 1
b)
2, 3, 2
c)
1, 2, 2
d)
1, 3, 1
67.
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
68.
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
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