# CHEM 1311 SILBERBERG 5TH EDITION

C) Hg
1) The symbol for the element mercury is_.

A) Pb
B) Sn
C) Hg
D) Me

C) solutions
2) Homogeneous mixtures are also known as_.

A) substances
B) elements
C) solutions
D) solids
E) compounds

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CHEM 1311 SILBERBERG 5TH EDITION
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B) 1.3 x 10^3 g.
3) Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm?
A) 4.3 x 10^2 g
B) 1.3 x 10^3 g
C) 2.3 x 10^2 g
D) 1.4 g
E) 2.1 x 104 g
B) how close a measured number is to the true value
4) Accuracy refers to_.

A) how close a measured number is to other measured numbers
B) how close a measured number is to the true value
C) how close a measured number is to the calculated value
D) how close a measured number is to zero
E) how close a measured number is to infinity

E) 2.5 x 10^9 fg
5) Of the following, is the smallest mass.

A) 2.5 x 10-2 mg
B) 2.5 x 10^10 ng
C) 25 kg
D) 2.5 x 10^15 pg
E) 2.5 x 10^9 fg

B) 1.6 x 10^2
6) 45 m/s = ____ km/hr

A) 0.045
B) 1.6 x 10^2
C) 1.6 x 10^5
D) 2.7 x 10^3
E) 2.7

C) 194 Note that only significant figures are required
7) The estimated costs for remodeling the interior of an apartment are: three 1-gallon cans of paint at \$13.22 each, two paint brushes at \$9.53 each , and \$135 for a helper. The total estimated cost with the appropriate significant figures is \$_____.

A) 193.72
B)2 x 10^2
C) 194
D) 1.9 x 10^2
E) 193.7

E) T(K) = t(°C) + 273.15
8) Which calculation clearly shows a conversion between temperatures in degrees Celsius, t(°C), and temperature in Kelvins, T(K)?

A) T(K) = 273.15 – t(°C)
B) T(K) = t(°C)
C) T(K) = [t(°C) + 32] x 1.8
D) T(K) = [t(°C – 32] /1.8
E) T(K) = t(°C) + 273.15 .

A) 25 kg
9) Of the following, ______________ is the largest mass.

A) 25 kg
B) 2.5 x 10^15pg
C) 2.5 x 10^10 ng
D) 2.5 x 10^-2 mg
E) 2.5 x 10^9 fg

False … it has 3 atoms 2 H and 1 O
10) Water is considered to be a diatomic molecule because it is composed of two different atoms.

True
False

A) mass
11) Which one of the following is not an intensive property?

A) mass
B) density
C) boiling point
D) temperature
E) melting point

E) 98.4
12) How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? 1 gal = 4 qt = 1gal= 3.7854 L.
A) 6.87 x 10^3
B) 6.87
C) 0.146
D) 1.46 x 10^-4
E) 98.4
Tin Sn comes from Stanum
13) Sn is the symbol for the element ?
D) Water is 11% hydrogen and 89% oxygen by mass.
14) Which of the following is an illustration of the law of constant composition?

A) Water boils at 100CC at 1 atm. pressure.
B) Water is a compound.
C) Water and salt have different boiling points.
D) Water is 11% hydrogen and 89% oxygen by mass.
E) Water can be separated into other substances by a chemical process.

B) 0.502
15) A certain liquid has a density of 2.67 g/cm3. 1340 g of this liquid would occupy a volume of?

A) 50.2
B) 0.502
C) 35.8
D) 3.58.
E) 1.99 x 10 ^-3

E) K
16) The symbol for the element potassium is

A) S
B) Pt
C) Ca
D) P
E) K

D) elemental copper
17) Which one of the following is a pure substance?

A) concrete
B) milk
C) sail water
D) elemental copper
E) wood

True
18) Temperature is a physical property that determines the direction of heat flow.

True
False

B) compounds
19) The law of constant composition applies to_.

A) heterogeneous mixtures
B) compounds
C) homogeneous mixtures
D) solutions
E) solids

E) law
20) A concise verbal statement or mathematical equation that summarizes a broad variety of observations and experiences is called a(n)_.

A) test
B) hypothesis
C) theory
D) experiment
E) law

D) 1 x 10^-12 … (.1000, 000, 000, 000)
21) What decimal power does the abbreviation pico represent?
A) 1 x 10^9
B) 1 x 10^6
C) 1 x 10^-1
D) 1 x 10^-15
E) 1 x 10^-12
E) compound
22) If matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an)_.

A) homogeneous mixture
B) mixture of elements
C) element
D) heterogeneous mixture
E) compound

A) 1 x 10^-15
23) What decimal power does the abbreviation f represent?

A) 1 x 10^-15
B) 1 x 10^ -12
C) 1 x 10^6
D) 1 x 10^-1
E) 1 x 10^3

Copper .. came from Cuprum
24) Cu is the symbol for the element_.
D) It is equivalent to a cubic decimeter .. 10 x 10 x 10
25) Which one of the following is true about the liter?

A) It is slightly smaller than a quart.
B) It contains 10** cubic centimeters.
C) It is slightly smaller than a gallon.
D) It is equivalent to a cubic decimeter.
E) It is the SI base unit for volume.

D) 35.4
26) The length of the side of a cube (in cm) having a volume of 44.4 L is_.

A) 875
B) 0.354
C) 66.6
D) 35.4
E) 6.66

B) mass
27) Of the following, only________ is an extensive property.

A) density
B) mass
C) freezing point
D) temperature
E) boiling point

D) 298 .. 273 + 25
28) The temperature of 25°C is in Kelvins.

A) 138
B) 166
C) 248
D) 298
E) 103

E) be separated into other substances by chemical means
29) An element cannot_.

A) be part of a heterogeneous mixture
B) be a pure substance
C) interact with other elements to form compounds
D) be part of a homogeneous mixture
E) be separated into other substances by chemical means

C) 10^-2
30) The quantity 1.0 mg/cm2 is the same as 1.0 x ____kg/m2.

A) 10^4
B)10^2
C) 10^-2
D) 10^-4
E) 10^-6

C) removes ambiguity as to the significant figures
31) Expressing a number in scientific notation_.

A) allows to increase the number’s precision
B) changes its value
C) removes ambiguity as to the significant figures
D) removes significant zeros

E) 2.296 x 10^2
32) Round the following number to four significant figures and express the result in standard exponential notation: 229.613

A) 2.296 x 10^-2
B) 0.2296 x 10^3
C) 22.96 x 10^-1
D) 229.6
E) 2.296 x 10^2

1000 micrograms
33) 1 milligram =______micrograms
A) Ag, silver
34) Which one of the following has the element name and symbol correctly matched?

A) Ag, silver
B) C, copper
C) Sn, silicon
D) P, potassium
E) Mg, manganese

D) 7.859 x 10^-1 g/mL
35) A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL What is the density of the object determined to an appropriate number of significant figures?

A) 8 x 10^-1 g/mL
B) 7.9 x 10^-1 g/mL
C) 7.86 x 10^-1 g/mL
D) 7.859 x 10^-1 g/mL
E) 7.8586 x 10^-1 g/mL

A) 13 … note that it is asking for the significant figures ONLY
36) The correct result (indicating the proper number of significant figures) of the following addition is__________________

12
1.2
0.12
+ 0.012

A) 13
B) 13.3
C) 13.33
D) 13.332
E) none of the above

C) aluminum
37) Which one of the following elements has a symbol that is not derived from its foreign name?

A) mercury
C) aluminum
D) tin
E) copper

C) kilogram
38) The SI unit for mass is_.

A) gram
B) troy ounce
C) kilogram
D) pound
E) none of the above

A) K … Kelvin
39) The SI unit of temperature is_.

A) K
B) °C
C) t
D) T
E) °F

B) Mg
40) The symbol for the element magnesium is_.

A) Ne
B) Mg
C) Mn
D) Si
E) Rb

B) 0.01 mm
41) Which of the following is the same as 0.001 cm?

A) 0.01 cm
B) 0.01 mm
C) 0.01 m
D) 100 mm
E) 1 mm

A) either an element or a compound
42) If matter is uniform throughout and cannot be separated into other substances by physical means, it is

A) either an element or a compound
B) a compound
C) an element
D) a heterogeneous mixture

B) distillation
43) A separation process that depends on differing abilities of substances to form gases is called_.

A) filtration
B) distillation
C) solvation
D) chromatography
E) All of the above are correct.

C) 3.45
44) Osmium has a density of 22.6 g/cm3. The mass of a block of osmium that measures 1.01 cm x 0.233 cm x 0.648 cm is _______ g.

A) 6.75 x 10^-3
B) 6.75 x 10^3
C) 3.45
D) 34.5
E) 148

D) 1 x 10^-10 cm
45) 1 picometer =_centimeters
A) 1 x 10^-8
B) 1 x 10^-12
C) 1 x 10^10
D) 1 x 10^-10
E) 1 x 10^8
B) 0.085
46) Round the number 0.08535 to two significant figures.

A) 0.08535
B) 0.085
C) 0.0854
D) 0.086
E) 0.09

C) temperature
47) Which one of the following is an intensive property?

A) heat content
B) mass
C) temperature
D) volume
E) amount

E) 10^24
48) One angstrom, symbolized A, is 10^-10 m. 1 cm3 = ________ A^3.

A) 10^-9
B) 10^-24
C) 10^30
D) 10^-30
E) 10^24

D) hypothesis
49) The initial or tentative explanation of an observation is called a(n)_.

A) test
B) law
C) experiment
D) hypothesis
E) theory

C) 4.93
50) What is the volume (in cm3) of a 63.4 g piece of metal with a density of 12.86 g/cm3?

A) .425
B) 19.5
C) 4.93
D) 6.65

C) 199.791…. this is a trick, it means the number of digits in this case 6
51) Which of the following has the same number of significant figures as the number 1.00310?
A) 5.119
B) 1 x 10^6
C) 199.791
D) 8.66
E) 100
E) 5.84
52) The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a volume of ____cm3.

A) 0.00155
B) 644
C) 0.171
D) 10.5
E) 5.84

B) 22
53) If an object is accelerating at a rate of 25 m/s2, how long (in seconds) will it take to reach a speed of 550 m/s? (Assume an initial velocity of zero.)

A) 2.3 x 10^2
B) 22
C) 1.2 x 10^4
D) 1.4 x 10^4
E) 0.045

C) 1, 3
54) Which of the following are chemical processes?
1. rusting of a nail
2. freezing of water
3. decomposition of water into hydrogen and oxygen gases
4. compression of oxygen gas
______ select all that apply ______

A) 1,4
B) 2,3,4
C) 1, 3
D) 1,3, 4
E) 1,2

E) 1.36 x 10^4 , this answer maybe wrong, reason you cannot get a bigger number converting from gr to Kg
55) The density of mercury is 13.6 g/cm3. The density of mercury is _______kg/m3.
A) 1.36 x 10^8
B) 1.36 x 10^-2
C) 1.36 x 10^-5
D) 1.36 x 10^-5
E) 1.36 x 10^4
D) heterogeneous mixture
56) A combination of sand, salt, and water is an example of a______.

A) pure substance
B) compound
C) homogeneous mixture
D) heterogeneous mixture
E) solid

C) 100.090090
57) In which one of the following numbers are all of the zeros significant?

A) 00.0030020
B) 0.143290
C) 100.090090
D) 0.1000
E) 0.05843

B) Chlorous acid
58) The correct name for HClO2 is ______.

A) chloric acid
B) chlorous acid
C) hypochlorous acid
D) hypychloric acid
E) perchloric acid

E) 1-
59) Predict the charge of the most stable ion of bromine.

A) 2+
B) 1+
C) 2-
D) 3+
E) 1-

E) SO3^-2
60) Which species below is the sulfite ion?

A) S^2-
B) SO2^-2
C) HS-
D) SO4^-2
E) SO3^-2

C) metal, metal
61) Lithium is a_____ and magnesium is a______.

A) nonmetal, metal
B) metalloid, metalloid
C) metal, metal
D) metal, metalloid
E) nonmetal, nonmetal

A) PCl5
62) Of the choices below, which one is not an ionic compound?

A) PCl5
B) NaCl
C) MoCl6
D) RbCl
E) PbCl2

C) 54, 54, 78 … 54 prot, 54 elect and the total less 132 amu = 78
63) There are ____ electrons, _____ protons, and _____ neutrons in an atom of 132 / 54 Xe.

A) 78, 78, 54
B) 78, 78,132
C) 54, 54, 78
D) 54, 54,132
E) 132,132,54

B) gravity
64) Which one of the following basic forces is so small that it has no chemical significance?

A) strong nuclear force
B) gravity
C) electromagnetism
D) weak nuclear force
E) Coulomb’s law

B) P3-
65) Of the following, ____ contains the greatest number of electrons.

A) p^2-
B) P^3-
C) P
D) P^2+
E) p^3+

B) O, S … there are in the same period column
66) Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

A) H, He
B) O, S
C) K, Ca
D) Si, P
E) C, N

B) NO3-
67) Which species below is the nitrate ion?

A) N3-
B) NO3-
C) NH4+
D) N02-
E) N^3-

B) magnesium chlorate
68) The correct name for Mg(ClO3)2 is____.

A) manganese perchlorate
B) magnesium chlorate
C) manganese chlorate
D) magnesium perchlorate
E) magnesium chloroxide

E) nitrate
69) When a fluorine atom forms the fluoride ion, it has the same charge as the ion.

A) phosphate
B) ammonium
C) sulfite
D) sulfide
E) nitrate

A) sulfur monoxide
70) The correct name for SO is_.

A) sulfur monoxide
B) sulfite
C) sulfoxide
D) sulfate
E) sulfur oxide

D) 8A
71) Which group in the periodic table contains only nonmetals?

A) 6A
B) 2B
C) 1A
D) 8A
E) 2A

A) 32S^-2
72) Which species has 18 electrons?

A) 32S^-2
B) 64Cu^+2
C) 35C1
D) 39K
E) 27Al^+3

D) iodous acid
73) The correct name for HIO2 is_.

A) hypoiodic acid
B) hydriodic acid
C) periodic acid
D) iodous acid
E) periodous acid

B) halogens
74) Elements in Group 17 are known as the _

A) alkaline earth metals
B) halogens
C) alkali metals
D) noble gases
E) chalcogens

D) dinitrogen pentoxide
75) The correct name for N2O5 is_

A) nitrogen oxide
B) nitrogen pentoxide
C) nitrous oxide
D) dinitrogen pentoxide
E) nitric oxide

76) The name of the ionic compound V2O3 is
E) protons and neutrons
77) The nucleus of an atom contains_.

A) protons
B) electrons
C) neutrons
D) protons, neutrons, and electrons
E) protons and neutrons

A) +3
78) The charge on the iron ion in the salt Fe2O3 is_.
A) +3
B) +1
C) -6
D) +2
E) -5
E) is definitely a non-metal
79) An element in the upper right corner of the periodic table

A) is definitely a metal
B) is either a metalloid or a non-metal
C) is definitely a metalloid
D) is either a metal or metalloid
E) is definitely a non-metal

D) nitrous acid
80) The correct name for HNO2 is_.
A) nitric acid
B) hydrogen nitrate
C) hyponitrous acid
D) nitrous acid
E) pernitric acid
A) 162.35
81) The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu.
Isotope Abundance Mas
159x 30.60 159.37
163X 15.79 162.79
164X 53.61 163.92
A) 162.35
B) 33.33
C) 163.15
D) 162.03
E) 161.75
E) B
82) Which of the following elements is a metalloid?

A) C
B) Ga
C) In
D) Se
E) B

E) Alkaline earth metals
83)_typically form ions with a 2+ charge.

A) Transition metals
B) Chalcogens
C) Alkali metals
D) Halogens
E) Alkaline earth metals

E) I and Br
84) Which pair of elements below should be the most similar in chemical properties?

A) C and O
B) K and Kr
C) B and As
D) Cs and He
E) I and Br

B) 17.20
85) The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are
given in the table below. The average atomic mass of the element is_amu.

Isotope Abundance (%) Mass (amu)
15X 28.60 15.33
17X 13.30 17.26
16X 58.10 18.11

A) 16.90
B) 17.20
C) 16.90
D) 17.65
E) 17.11

7A … (Halogen type)
86) What group in the periodic table would the fictitious
..
element :X : be found?
.
__________________
C) definitely a metal
87) An element that appears in the lower left corner of the periodic table is_

A) definitely a non-metal
B) either a metalloid or a non-metal
C) definitely a metal
D) definitely a metalloid
E) either a metal or metalloid

B) C03^2-
88) The formula of the carbonate ion is _

A) C03^3-
B) C03^2-
C) CO-
D) C02-
E) C02^2-

E) electrons
89) Cathode rays are_.

A) atoms
B) x-rays
C) protons
D) neutrons
E) electrons

A) the law of constant composition
90) A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of_

A) the law of constant composition
B) the law of conservation of mass
C) the law of conservation of energy
D) the law of multiple proportions
E) none of the above

C) potassium perbromate
91) The name of the ionic compound KBrO4 is_.

A) potassium hypobromate
B) potassium perbromite
C) potassium perbromate
D) potassium bromide
E) potassium bromate

B) chloric acid
92) The correct name for HClO3 is_.
A) hydrochlorous acid
B) chloric acid
C) perchloric acid
D) chlorous acid
E) hydrochloric acid
Fluorine (F)
93) Which element in the halogen family is the most electronegative?
__________
B) MgF2
94) Predict the empirical formula of the ionic compound that forms from magnesium and fluorine.

A) Mg2F3
B) MgF2
C) Mg2F
D) Mg3F2
E) MgF

C) HClO4
95) What is the formula for perchloric acid?

A) HClO
B) HClO3
C) HClO4
D) HCl
E) HClO2

A) order of increasing atomic number
96) In the periodic table, the elements are arranged in_.

A) order of increasing atomic number
B) order of increasing metallic properties
C) order of increasing neutron content
D) reverse alphabetical order
E) alphabetical order

A) C6H7O3
97) The empirical formula of a compound with molecules containing 12 carbon atoms, 14 hydrogen atoms, and 6
oxygen atoms is_.

A) C6H7O3
B) C2H4O
C) CHO
D) CH2O
E) C12H14O6

A) Sn
98) Which metal forms cations of differing charges?

A) Sn
B) Cs
C) Al
D) Ba
E) K

C) 29 p+, 34 n°, 29 e-
99) Which combination of protons, neutrons, and electrons is correct for the isotope of copper, on 63/29 Cu?

A) 29 p+, 29 n°, 63 e-
B) 34 p+, 34 n°, 29 e-
C) 29 p+, 34 n°, 29 e-
D) 34 p+, 29 n°, 34 e-
E) 63 p+, 29 n°, 63 e-

D) SrCl2
100) Which of the following compounds would you expect to be ionic?

A) H2S
B) H20
C) CO2
D) SrCl2
E) SO2

C) for monatomic anion names
101) The suffix -ide is used primarily_.

A) for polyatomic cation names
B) for the name of the first element in a molecular compound
C) for monatomic anion names
D) for monoatomic cations
E) to indicate binary acids

C) potassium
102) Which element forms an ion with the same charge as the ammonium ion?

A) chlorine
B) calcium
C) potassium
D) oxygen
E) nitrogen

C) MgS
103) Magnesium and sulfur form an ionic compound with the formula_.

A) Mg2S3
B) Mg2S
C) MgS
D) Mg2S2
E) MgS2

D) nitrate
104) Which one of the following polyatomic ions has tine same charge as the hydroxide ion?

A) phosphate
B) carbonate
C) ammonium
D) nitrate
E) Sulfate

C) barium, bromine
105) Which pair of elements is most apt to form an ionic compound with each other?

A) sulfur, fluorine
B) calcium, sodium
C) barium, bromine
D) oxygen, fluorine
E) nitrogen, hydrogen

B) chalcogens
106) Elements in Group 16 are known as the_.

A) halogens
B) chalcogens
C) alkali metals
D) noble gases
E) alkaline earth metals

B) N3-
107) Which species below is the nitride ion?

A) NO2-
B) N3-
Q Na+
D) NO3-
E)NH4+

C) ammonium phosphate
108) The name of the ionic compound (NH4)3PO4 is__.

A) ammonia phosphide
B) nitrogen hydrogen phosphate
C) ammonium phosphate
D) tetrammonium phosphate
E) triammonium phosphate

C) ferrous nitrate
109) A correct name for Fe(N03)2 is_.

A) ferrous nitrite
B) ferric nitrite
C) ferrous nitrate
D) ferric nitrate
E) iron nitrite

E) Na3X
110) Barium reacts with a polyatomic ion to form a compound with the general formula Ba3(X)2- What would be
the most likely formula for the compound formed between sodium and the polyatomic ion X?

A) Na2X2
B) Na2X
C) Na3X2
D) NaX
E) Na3X

A) 19f-
111) Which one of the following species has as many electrons as it has neutrons?
A) 19f-
B) 1H
C) 14C
D) 14C2+
E) 40Ca2+
A) Na
112) Which metal does not form cations of differing charges?

A) Na
B) Co
C) Sn
D) Fe
E) Cu

ammonium
NH4+
hydronium
H3O+
acetate
CH3COO-
or
C2H3O2-
cyanide
CN-
hydroxide
OH-
hypochlorite
ClO-
chlorite
ClO2-
chlorate
ClO3-
perchlorate
ClO4-
nitrite
NO2
nitrate
NO3-
permanganate
MnO4-
carbonate
CO3^2-
hydrogen carbonate (or bicarbonate)
HCO3-
chromate
CrO4^2-
dichromate
Cr2O7^2-
peroxide
O2^2-
phosphate
PO43-
hydrogen phosphate
HPO4^2-
sulfite
SO3^2-
sulfate
SO4^2-
hydrogen sulfate (or bisulfate)
HSO4-
hydride
Anions
H-
fluoride
Anions
F-
chloride
Anions
Cl-
bromide
Anions
Br-
iodide
Anions
I-
oxide
Anions
O2-
sulfide
Anions
S2-
nitride
Anions
N3-

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