C101 Exam 1 Practice Exam – Fall 2012
1. If a 5.00-g sample of a metal has a volume of 1.30 cm3, what is the density of the metal?
A) 38.5 g/cm3
B) 3.85 g/cm3
C) 0.0260 g/cm3
D) 3 g/cm3
E) 5.00 g/cm3
2. The density of isopropyl alcohol is 0.79 g/mL. What is the mass of 39.5 mL of isopropyl
alcohol?
A) 0.020 g
B) 39.5 g
C) 40. g
D) 31. g
E) 50. g
3. Express 230790 in scientific notation.
A) 2.30790 x 105
B) 2.3079 x 105
C) 2.3079 x 101
D) 2.30790 x 10-5
E) 2.3 x 105
4. How many liters are in 4,769 mL?
A) 4,769 L
B) 4,769 x 10-2 L
C) 47.69 L
D) 4.769 L
E) 4.769 x 103 L
5. Using the rules of significant figures, calculate the following:
7.72 – 0.021 =
A) 7.6990
B) 7.699
C) 7.70
D) 7.7
E) 8.
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6. The product of (0.01400)
A) 2
B) 3
C) 5
D) 1023
E) 4
(1.3379 x 1023) will have how many significant figures?
7. Aluminum metal is an example of
A) a homogeneous mixture
B) a heterogeneous mixture
C) a compound
D) an element
8. Which of the following is a chemical change?
A) A match ignites and burns
B) Water evaporates from the ocean
C) Melted wax can be poured into container and harden
D) A white t-shirt is tie-dyed blue and red
E) Salt dissolves in water
9. Which of the following elements forms diatomic molecules
A) sulfur
B) helium
C) neon
D) bromine
E) cesium
10. Which of the following elements has chemical properties most similar to sodium?
A) Mg
B) Ne
C) K
D) N
11. How many protons are in the nucleus of a Hg (mercury) atom?
A) 40
B) 80
C) 200.59
D) 201
E) 121
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12. What is the most abundant element by mass on the earth (including the crust, oceans,
and atmosphere)?
A) silicon
B) oxygen
C) hydrogen
D) carbon
E) iron
13. The symbol for the element silver is
A) S
B) Si
C) Ag
D) Au
E) Sr
14. The symbol Pb stands for the element
A) phosphorus
B) palladium
C) polonium
D) lead
E) tin
15. The symbol for chlorine is
A) Ch
B) C
C) Cl
D) F
E) Cn
16. How many nitrogen atoms are indicated by the formula Mg(NO3)2?
A) 1
B) 2
C) 3
D) 6
E) 9
17. The chemical formula Fe3O4 indicates
A) three atoms of iron and four atoms of oxygen
B) four atoms of iron and three atoms of oxygen
C) seven atoms of each element
D) twelve atoms of each element
E) one atom of each element
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18. How many protons, electrons, and average number of neutrons, respectively, does
Nickel have?
A) 7, 7, 7
B) 28, 28, 28
C) 28, 28, 59
D) 31, 28, 59
E) 28, 28, 31
19. How many total atoms are represented by one formula unit of barium carbonate,
BaCO3?
A) 5
B) 6
C) 14
D) 18
E) 25
20. The maximum number of electrons allowed in one orbital is
A) 2
B) 4
C) 8
D) 18
E) none of these
21. What main atomic particle(s) is(are) in the nucleus of an atom
A) proton and electron
B) proton, neutron and electron
C) neutron and proton
D) proton only
E) neutron
22. Calcium is more reactive than magnesium because the valence electrons in calcium are
further away from the nucleus and feel less nuclear attraction, so they require less
energy to be removed from the atom.
A) True
B) False
23. What is the average number of neutrons in barium, Ba?
A) 28
B) 56
C) 81
D) 137
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24. What causes different metal salts to give off colors when sprayed into a flame
A) White light is made of all colors
B) Light is given off as the atom absorbs energy from the flame
C) Photons of light are given off as excited electrons return to their ground states
D) The methane gas contains all the colors
E) The rainbow effect
25. The correct name for Cu2O is
A) copper oxide
B) copper (I) oxide
C) copper (II) oxide
D) dicopper monoxide
26. The correct formula for titanium(II) oxide is
A) Ti2O
B) TiO2
C) TO
D) TO2
E) TiO
27. Which of the following could be the product of the reaction Al + O2?
A) AlO
B) AlO2
C) AlO3
D) Al3O2
E) Al2O3
28. The correct name for an aqueous solution of H3PO4 is
A) hydrophosphoric acid
B) phosphorous acid
C) phosphate acid
D) trihydrophosphorous acid
E) phosphoric acid
29. The name for Ba(NO3)2 is
A) barium dinitrate
B) barium(II) nitrate
C) barium nitrite
D) barium(I) nitrate
E) barium nitrate
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30. The correct name for KCl is
A) potassium monochloride
B) potassium(I) chloride
C) monopotassium chloride
D) potassium chloride
E) monopotassium monochloride
31. What is the charge on the manganese ion in NaMnO3 ?
A) 1
B) 2
C) 3
D) 4
E) 5
32. Which of the following is not the correct chemical formula for the compound named?
A) sodium carbonate Na2CO3
B) calcium sulfate
CaSO4
C) beryllium oxide BeO
D) nickel(II) peroxide Ni2O
E) iron (III) oxide
Fe2O3
33. The correct name for NiO is
A) nickel oxide
B) nickel (I) oxide
C) nickel (II) oxide
D) nickel monoxide
E) mononitrogen monoxide
34. The binary compound PCl3 is called
A) phosphorus chloride
B) triphosphorus chloride
C) monophosphorus trichloride
D) phosphorus trichloride
E) none of these
35. Write the formula for dinitrogen monoxide
A) 2NO
B) N2O
C) NO2
D) N2O2
E) NaOH
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36. What is the formula for nitric acid?
A) HN
B) H2N
C) HNO2
D) HNO3
E) H2NO4
37. Which of the following is the correct formula for carbon dioxide monochloride?
A) COCl
B) COCl2
C) CO2Cl
D) CO2Cl2
E) COCl4
38. The correct formula for silver iodide is
A) AgI
B) AgI2
C) Ag2I
D) SI
E) SiI2
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Answer Key Chem 101 Practice Exam 1 – Fall 2012
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
B
D
B
D
C
E
D
A
D
C
B
B
C
D
C
B
A
E
A
A
C
A
C
C
B
E
E
E
E
D
E
D
C
D
B
D
C
A
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Names of Common Polyatomic Ions
Ion
NH4+
ammonium
Ion
CO32-
Name
carbonate
NO2-
nitrite
HCO3-
hydrogen carbonate
NO3-
nitrate
*ClO-
hypochlorite
SO32-
sulfite
*ClO2-
chlorite
SO42-
sulfate
*ClO3-
chlorate
*ClO4-
perchlorate
*HSO4-
Name
(bisulfate is a widely used
common name)
(biocarbonate is a widely
used common name)
OH-
hydroxide
C2H3O2-
acetate
CN-
cyanide
*MnO4-
permanganate
PO43-
phosphate
*Cr2O72-
dichromate
*HPO42-
hydrogen phospate
*CrO42-
chromate
*H2PO4-
dihydrogen phosphate
*O22-
Peroxide
* You do not need to memorize these ions for the ion quiz or for exams.
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Chem 101 Useful Information
1 Kg = 1000 g
1 L = 1000 mL
T(°F) = 1.80(T°C) + 32
Specific heat of water = 1 cal/g/°C
Standard Temperature and Pressure = 0° C
and 1 atmosphere
1 atm = 14.70 psi
Ideal Gas Law: PV = nRT
P1V 1
=
T1
V1
=
T1
1 cal = 4.184 J
T(°C) + 273 = T(K)
0° C = 273 K
1 mol of gas at STP = 22.4 Liters
1 atmosphere = 760 torr
(1 atm = 760 mm Hg)
R = 0.08206 L atm/mol K
P1V1 = P2V2
P 2V 2
T2
V2
T2
P1 P 2
=
T1 T 2
C = λν
C = 3.00 x 108 m/s
E = hν
h = 6.626 x 10-34 J•s
Avogadro's number = 6.022 x 1023
Activity Series for Metals
Li, K, Ba, Ca, Na, Mg, Al, Mn, Zn, Cr, Fe, Co, Ni, Sn, Pb, H, Cu, Ag, Hg, Pt, Au
Most Active
Least Active
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Chem 101 Useful Information
Nomenclature Flow Chart
Nonmetal name with –ide ending
Name the polyatomic ion
+ 1 nonmetal
+ 2 nonmetals
Name the metal
Indicate metal charge by (Roman #)
or Latin name (-ous or –ic)
Single-Charge Metal
Multiple-Charge Metal
* Metal + Nonmetal
Chemical Formula
2 Nonmetals
H + Nonmetal(s)
1. Use Greek prefixes to
indicate subscripts
2. Second element –ide
ending
Name as acids
*Treat NH4+ as a metal
when naming compounds
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