Question 1

Aluminum forms an ion with a charge of ________.

Accepted Answer

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

Question 2

An atom of 14C contains ________ electrons.

Accepted Answer

A)  14
B)  20
C)  8
D)  10
E)  6

Question 3

Sulfur forms an ion with a charge of ________.

Accepted Answer

A)  2+
B)  2-
C)  3+
D)  6-
E)  6+

Question 4

The element X has two 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.

Accepted Answer

A)  30.20
B)  33.20
C)  34.02
D)  35.22
E)  32.73

Question 5

The average atomic weight of copper,which has two naturally occurring isotopes,is 63.5.One of the isotopes has an atomic weight of 62.9 amu and constitutes 69.1% of the copper isotopes.The other isotope has an abundance of 30.9%.The atomic weight (amu) of the second isotope is ________ amu.

Accepted Answer

A)  63.2
B)  63.8
C)  64.1
D)  64.8
E)  28.1

Question 6

The correct name for HClO is ________.

Accepted Answer

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

Question 7

The formula for zinc phosphate is Zn3(PO4) 2.What is the formula for cadmium arsenate?

Accepted Answer

A)  Cd4(AsO2) 3
B)  Cd3(AsO4) 2
C)  Cd3(AsO3) 4
D)  Cd2(AsO4) 3
E)  Cd2(AsO4) 4

Question 8

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.

Accepted Answer

A)  161.75
B)  162.03
C)  162.35
D)  163.15
E)  33.33

Question 9

In the symbol below,X = ________.  X

Accepted Answer

A)  Zr
B)  K
C)  Sc
D)  Br
E)  not enough information to determine

Question 10

Which one of the following will occur as diatomic molecules in elemental form?

Accepted Answer

A)  helium
B)  argon
C)  chlorine
D)  phosphorous
E)  sodium

Question 11

Different isotopes of a particular element contain the same number of ________.

Accepted Answer

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

Question 12

How many protons are there in one atom of 71Ga?

Accepted Answer

A)  40
B)  70
C)  71
D)  31
E)  13

Question 13

Which species below is the nitride ion?

Accepted Answer

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

Question 14

The correct name for Al2O3 is ________.

Accepted Answer

A)  aluminum oxide
B)  dialuminum oxide
C)  dialuminum trioxide
D)  aluminum hydroxide
E)  aluminum trioxide

Question 15

Of the following,the smallest and lightest subatomic particle is the ________.

Accepted Answer

A)  neutron
B)  proton
C)  electron
D)  nucleus
E)  alpha particle

Question 16

The correct name for Ni(CN) 2 is ________.

Accepted Answer

A)  nickel (I) cyanide
B)  nickel cyanate
C)  nickel carbonate
D)  nickel (II) cyanide
E)  nickel (I) nitride

Question 17

Which one of the following compounds is copper(I) chloride?

Accepted Answer

A)  CuCl
B)  CuCl2
C)  Cu2Cl
D)  Cu2Cl3
E)  Cu3Cl2

Question 18

How many neutrons are there in one atom of 184W?

Accepted Answer

A)  74
B)  112
C)  258
D)  110
E)  184

Question 19

The elements in groups 1A,6A,and 7A are called ________,respectively.

Accepted Answer

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

Question 20

An element in the upper right corner of the periodic table ________.

Accepted Answer

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

Exam 2: Atoms, molecules, and Ions

Different isotopes of a particular element contain the same number of ________.

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In the symbol below,X = ________. X

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Aluminum forms an ion with a charge of ________.

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An element in the upper right corner of the periodic table ________.

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The formula for zinc phosphate is Zn3(PO4) 2.What is the formula for cadmium arsenate?

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Which species below is the nitride ion?

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An atom of 14C contains ________ electrons.

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The element X has two 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.

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How many neutrons are there in one atom of 184W?

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The correct name for Ni(CN) 2 is ________.

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Which one of the following compounds is copper(I) chloride?

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The elements in groups 1A,6A,and 7A are called ________,respectively.

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The average atomic weight of copper,which has two naturally occurring isotopes,is 63.5.One of the isotopes has an atomic weight of 62.9 amu and constitutes 69.1% of the copper isotopes.The other isotope has an abundance of 30.9%.The atomic weight (amu) of the second isotope is ________ amu.

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The correct name for HClO is ________.

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Which one of the following will occur as diatomic molecules in elemental form?

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How many protons are there in one atom of 71Ga?

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Sulfur forms an ion with a charge of ________.

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Of the following,the smallest and lightest subatomic particle is the ________.

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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.

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The correct name for Al2O3 is ________.

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The formula for zinc phosphate is Zn₃(PO₄) ₂.What is the formula for cadmium arsenate?

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An atom of 14_{C contains ________ electrons.}

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How many neutrons are there in one atom of ¹⁸⁴W?

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The correct name for Ni(CN) ₂ is ________.

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How many protons are there in one atom of ⁷¹Ga?

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The correct name for Al₂O₃is ________.

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