Question 1

How many protons,neutrons,and electrons are in a silver atom with a mass number of 108?

Accepted Answer

A)  47 protons,47 neutrons,61 electrons 
B)  47 protons,61 neutrons,47 electrons 
C)  61 protons,47 neutrons,47 electrons 
D)  47 protons,108 neutrons,47 electrons 
E)  61 protons,108 neutrons,61 electrons 
A)  47 protons,47 neutrons,61 electrons 
B)  47 protons,61 neutrons,47 electrons 
C)  61 protons,47 neutrons,47 electrons 
D)  47 protons,108 neutrons,47 electrons 
E)  61 protons,108 neutrons,61 electrons

Question 2

What is the correct formula for potassium dichromate?

Accepted Answer

A)  K2Cr2O7 
B)  K2(Cr2O7)2 
C)  K2CrO4 
D)  K2(CrO4)2 
E)  KCrO4 
A)  K2Cr2O7 
B)  K2(Cr2O7)2 
C)  K2CrO4 
D)  K2(CrO4)2 
E)  KCrO4

Question 3

What are the values for x and y,respectively,in CaxHyPO4?

Accepted Answer

A)  1 and 2 
B)  2 and 1 
C)  1 and 3 
D)  2 and 2 
E)  1 and 1 
A)  1 and 2 
B)  2 and 1 
C)  1 and 3 
D)  2 and 2 
E)  1 and 1

Question 4

Identify the ions and their charges in KH2PO4.

Accepted Answer

A)  K+,H+,P3−,O2− 
B)  K+,H2+,P3−,O8− 
C)  K+,H22+,P−1,O4−2 
D)  K+,H2PO4− 
E)  K+,H2+,PO43− 
A)  K+,H+,P3−,O2− 
B)  K+,H2+,P3−,O8− 
C)  K+,H22+,P−1,O4−2 
D)  K+,H2PO4− 
E)  K+,H2+,PO43−

Question 5

What is the atomic symbol for an element with 39 protons and 50 neutrons?

Accepted Answer

A)  ${ }_{81}^{89} \mathrm{Na}$ 
B)  ${ }_{39}^{50} \mathrm{Y}$ 
C)  ${ }_{39}^{89} \mathrm{Y}$ 
D)  ${ }_{50}^{89} \mathrm{Sn}$ 
E)  ${ }_{89}^{227} \mathrm{Ac}$ 
A)  ${ }_{81}^{89} \mathrm{Na}$ 
B)  ${ }_{39}^{50} \mathrm{Y}$ 
C)  ${ }_{39}^{89} \mathrm{Y}$ 
D)  ${ }_{50}^{89} \mathrm{Sn}$ 
E)  ${ }_{89}^{227} \mathrm{Ac}$

Question 6

What is the correct name for MnS?

Accepted Answer

A)  manganese sulfide 
B)  dimanganese sulfate 
C)  dimanganese sulfide 
D)  manganese(II)sulfate 
E)  manganese(II)sulfide 
A)  manganese sulfide 
B)  dimanganese sulfate 
C)  dimanganese sulfide 
D)  manganese(II)sulfate 
E)  manganese(II)sulfide

Question 7

What is the correct formula for iron(II)nitrate?

Accepted Answer

A)  Fe2(NO3)2 
B)  Fe2NO3 
C)  Fe(NO3)2 
D)  Fe3N2 
E)  FeNO3 
A)  Fe2(NO3)2 
B)  Fe2NO3 
C)  Fe(NO3)2 
D)  Fe3N2 
E)  FeNO3

Question 8

Which atom is most likely to form an ion with a +2 charge?

Accepted Answer

A)  scandium 
B)  calcium 
C)  aluminum 
D)  oxygen 
E)  fluorine 
A)  scandium 
B)  calcium 
C)  aluminum 
D)  oxygen 
E)  fluorine

Question 9

Rank the subatomic particles from least to greatest mass.

Accepted Answer

A)  electrons = neutrons = protons 
B)  electrons = protons < neutrons 
C)  electrons < neutrons = protons 
D)  electrons < protons < neutrons 
E)  electrons < neutrons < protons 
A)  electrons = neutrons = protons 
B)  electrons = protons < neutrons 
C)  electrons < neutrons = protons 
D)  electrons < protons < neutrons 
E)  electrons < neutrons < protons

Question 10

What is the mass (in grams)of a boron atom?

Accepted Answer

A)  10.8 g 
B)  1.80 × 10-23 g 
C)  1.66 × 10-24 g 
D)  5.57 × 1022 g 
E)  1.54 × 10-25 g 
A)  10.8 g 
B)  1.80 × 10-23 g 
C)  1.66 × 10-24 g 
D)  5.57 × 1022 g 
E)  1.54 × 10-25 g

Question 11

Which of the following are a pair of isotopes?

Accepted Answer

A)  ${ }_{18}^{40} \mathrm{Ar}$ and ${ }_{19}^{40} \mathrm{K}$ 
B)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{19}^{40} \mathrm{K}$ 
C)  ${ }_{18}^{40} \mathrm{Ar}$ and ${ }_{36}^{80} \mathrm{Kr}$ 
D)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{19}^{39} \mathrm{~K}$ 
E)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{20}^{42} \mathrm{Ca}$ 
A)  ${ }_{18}^{40} \mathrm{Ar}$ and ${ }_{19}^{40} \mathrm{K}$ 
B)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{19}^{40} \mathrm{K}$ 
C)  ${ }_{18}^{40} \mathrm{Ar}$ and ${ }_{36}^{80} \mathrm{Kr}$ 
D)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{19}^{39} \mathrm{~K}$ 
E)  ${ }_{20}^{40} \mathrm{Ca}$ and ${ }_{20}^{42} \mathrm{Ca}$

Question 12

All atoms of the same element have the same number of ____.

Accepted Answer

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

Question 13

A strontium ion has ____ electrons.

Accepted Answer

A)  35 
B)  36 
C)  37 
D)  38 
E)  39 
A)  35 
B)  36 
C)  37 
D)  38 
E)  39

Question 14

What is the correct formula for an ionic compound that contains magnesium ions and phosphide ions?

Accepted Answer

A)  MgP 
B)  MgP2 
C)  Mg3P2 
D)  Mg3(PO4)2 
E)  Mg2P3 
A)  MgP 
B)  MgP2 
C)  Mg3P2 
D)  Mg3(PO4)2 
E)  Mg2P3

Question 15

Which group of three elements contains a nonmetal,a metal,and a metalloid?

Accepted Answer

A)  Li,Al,Si 
B)  Na,Hg,I 
C)  I,Hg,Si 
D)  K,O,Br 
E)  H,Al,N 
A)  Li,Al,Si 
B)  Na,Hg,I 
C)  I,Hg,Si 
D)  K,O,Br 
E)  H,Al,N

Question 16

The formula of ethanol,CH3CH2OH,is an example of a(n)

Accepted Answer

A)  condensed formula. 
B)  empirical formula. 
C)  structural formula. 
D)  ionic compound formula. 
E)  molecular formula. 
A)  condensed formula. 
B)  empirical formula. 
C)  structural formula. 
D)  ionic compound formula. 
E)  molecular formula.

Question 17

What is the correct name for TiCl4?

Accepted Answer

A)  monotitanium tetrachloride 
B)  tetrachlorine titanate 
C)  titanium tetrachlorine 
D)  titanium(IV)tetrachloride 
E)  titanium(IV)chloride 
A)  monotitanium tetrachloride 
B)  tetrachlorine titanate 
C)  titanium tetrachlorine 
D)  titanium(IV)tetrachloride 
E)  titanium(IV)chloride

Question 18

What is the formula for hypochlorous acid?

Accepted Answer

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

Question 19

Gallium has an average atomic mass of 69.7 amu.In a typical sample,60.4% of Ga exists as Ga-69 (68.9257 amu).What is the identity and the atomic mass of the other isotope?

Accepted Answer

A)  ${ }_{31}^{72} \mathrm{Ga}$ ;70.9 amu 
B)  ${ }_{31}^{70} \mathrm{Ga}$ ;70.9 amu 
C)  ${ }_{31}^{71} \mathrm{Ga}$ ;70.9 amu 
D)  ${ }_{31}^{71} \mathrm{Ga}$ ;71.9 amu 
E)  ${ }_{31}^{72} \mathrm{Ga}$ ;71.9 amu 
A)  ${ }_{31}^{72} \mathrm{Ga}$ ;70.9 amu 
B)  ${ }_{31}^{70} \mathrm{Ga}$ ;70.9 amu 
C)  ${ }_{31}^{71} \mathrm{Ga}$ ;70.9 amu 
D)  ${ }_{31}^{71} \mathrm{Ga}$ ;71.9 amu 
E)  ${ }_{31}^{72} \mathrm{Ga}$ ;71.9 amu

Question 20

What is the mass number of an argon atom with 22 neutrons?

Accepted Answer

A)  2 
B)  18 
C)  22 
D)  40 
E)  39.95 
A)  2 
B)  18 
C)  22 
D)  40 
E)  39.95

Exam 2: Atoms, molecules, and Ions

How many protons,neutrons,and electrons are in a silver atom with a mass number of 108?

What is the correct formula for potassium dichromate?

What are the values for x and y,respectively,in CaxHyPO4?

Identify the ions and their charges in KH2PO4.

What is the atomic symbol for an element with 39 protons and 50 neutrons?

What is the correct name for MnS?

What is the correct formula for iron(II)nitrate?

Which atom is most likely to form an ion with a +2 charge?

Rank the subatomic particles from least to greatest mass.

What is the mass (in grams)of a boron atom?

Which of the following are a pair of isotopes?

All atoms of the same element have the same number of ____.

A strontium ion has ____ electrons.

What is the correct formula for an ionic compound that contains magnesium ions and phosphide ions?

Which group of three elements contains a nonmetal,a metal,and a metalloid?

The formula of ethanol,CH3CH2OH,is an example of a(n)

What is the correct name for TiCl4?

What is the formula for hypochlorous acid?

Gallium has an average atomic mass of 69.7 amu.In a typical sample,60.4% of Ga exists as Ga-69 (68.9257 amu).What is the identity and the atomic mass of the other isotope?

What is the mass number of an argon atom with 22 neutrons?

Matter and Measurements

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Acids and Bases

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Nuclear Reactions

Complex Ions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

What are the values for x and y,respectively,in Ca_xH_yPO₄?

Identify the ions and their charges in KH₂PO₄.

The formula of ethanol,CH₃CH₂OH,is an example of a(n)

What is the correct name for TiCl₄?