Question 1

Atoms of one element cannot be converted to another element by any known method.

Accepted Answer

A) True 
 B)False  False

Question 2

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: -5.92; -4.44; -2.96; -8.88. The units are arbitrary. What is the likely value of the electronic charge in these arbitrary units?

Accepted Answer

A)  -1.11 
B)  -1.48 
C)  -2.22 
D)  -2.96 
E)  -5.55 
A)  -1.11 
B)  -1.48 
C)  -2.22 
D)  -2.96 
E)  -5.55 B

Question 3

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

Accepted Answer

A)  ZnAc2 
B)  ZnCH3COO 
C)  Zn(CH3COO)2 
D)  Zn2CH3COO 
E)  ZnCH3COCH3 
A)  ZnAc2 
B)  ZnCH3COO 
C)  Zn(CH3COO)2 
D)  Zn2CH3COO 
E)  ZnCH3COCH3 C

Question 4

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Accepted Answer

A)  FeO 
B)  Fe2O 
C)  FeO3 
D)  Fe2O5 
E)  Fe2O3 
A)  FeO 
B)  Fe2O 
C)  FeO3 
D)  Fe2O5 
E)  Fe2O3

Question 5

Which of the following compounds is covalent?

Accepted Answer

A)  CaCl2 
B)  MgO 
C)  Al2O3 
D)  Cs2S 
E)  PCl3 
A)  CaCl2 
B)  MgO 
C)  Al2O3 
D)  Cs2S 
E)  PCl3

Question 6

Which of the following compounds is ionic?

Accepted Answer

A)  PF3 
B)  CS2 
C)  HCl 
D)  SO2 
E)  MgCl2 
A)  PF3 
B)  CS2 
C)  HCl 
D)  SO2 
E)  MgCl2

Question 7

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Accepted Answer

A)  KMnO3 
B)  KMnO4 
C)  K2MnO4 
D)  K(MnO4)2 
E)  K2Mn2O7 
A)  KMnO3 
B)  KMnO4 
C)  K2MnO4 
D)  K(MnO4)2 
E)  K2Mn2O7

Question 8

Which of the following is a metalloid?

Accepted Answer

A)  carbon, C, Z = 6 
B)  sulfur, S, Z = 16 
C)  germanium, Ge, Z = 32 
D)  iridium, Z = 77 
E)  bromine, Br, Z = 35 
A)  carbon, C, Z = 6 
B)  sulfur, S, Z = 16 
C)  germanium, Ge, Z = 32 
D)  iridium, Z = 77 
E)  bromine, Br, Z = 35

Question 9

In nature, some elements exist as molecules, while others do not.

Accepted Answer

A) True 
 B)False

Question 10

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

Accepted Answer

A)  barium oxide 
B)  barium(II) oxide 
C)  barium monoxide 
D)  baric oxide 
E)  barium peroxide 
A)  barium oxide 
B)  barium(II) oxide 
C)  barium monoxide 
D)  baric oxide 
E)  barium peroxide

Question 11

The compound, NaH2PO4, is present in many baking powders. What is its name?

Accepted Answer

A)  sodium biphosphate 
B)  sodium hydrogen phosphate 
C)  sodium dihydrogen phosphate 
D)  sodium hydrophosphate 
E)  sodium dihydride phosphate 
A)  sodium biphosphate 
B)  sodium hydrogen phosphate 
C)  sodium dihydrogen phosphate 
D)  sodium hydrophosphate 
E)  sodium dihydride phosphate

Question 12

Sodium chromate is used to protect iron from corrosion and rusting. Determine its molecular mass.

Accepted Answer

A)  261.97 amu 
B)  238.98 amu 
C)  161.97 amu 
D)  138.98 amu 
E)  74.99 amu 
A)  261.97 amu 
B)  238.98 amu 
C)  161.97 amu 
D)  138.98 amu 
E)  74.99 amu

Question 13

a. Give the names of the following ions:
(i) O22-
(ii) SO42-
b. Write down the formulas of the following ions:
(i) ammonium
(ii) nitrate

Accepted Answer

a. (i) per

Question 14

What is the name of P4Se3?

Accepted Answer

A)  phosphorus selenide 
B)  phosphorus triselenide 
C)  tetraphosphorus selenide 
D)  phosphoric selenide 
E)  tetraphosphorus triselenide 
A)  phosphorus selenide 
B)  phosphorus triselenide 
C)  tetraphosphorus selenide 
D)  phosphoric selenide 
E)  tetraphosphorus triselenide

Question 15

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Accepted Answer

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

Question 16

Which one of the following combinations of names and formulas of ions is incorrect?

Accepted Answer

A)  NH4+ ammonium 
B)  S2- sulfide 
C)  CN- cyanide 
D)  S2O32- thiosulfate 
E)  ClO3- perchlorate 
A)  NH4+ ammonium 
B)  S2- sulfide 
C)  CN- cyanide 
D)  S2O32- thiosulfate 
E)  ClO3- perchlorate

Question 17

Which one of the following combinations of names and formulas is incorrect?

Accepted Answer

A)  H3PO4 phosphoric acid 
B)  HNO3 nitric acid 
C)  NaHCO3 sodium carbonate 
D)  H2CO3 carbonic acid 
E)  KOH potassium hydroxide 
A)  H3PO4 phosphoric acid 
B)  HNO3 nitric acid 
C)  NaHCO3 sodium carbonate 
D)  H2CO3 carbonic acid 
E)  KOH potassium hydroxide

Question 18

For each of the following names, write down the corresponding formula, including charge where appropriate (atomic numbers and mass numbers are not required):
a. zinc ion
b. nitrite ion
c. carbonic acid
d. cyanide ion

Accepted Answer

a. Zn²⁺ b. N

Question 19

All neutral atoms of tin have 50 protons and 50 electrons.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is a non-metal?

Accepted Answer

A)  lithium, Li, Z = 3 
B)  bromine, Br, Z = 35 
C)  mercury, Hg, Z = 80 
D)  bismuth, Bi, Z = 83 
E)  sodium, Na, Z = 11 
A)  lithium, Li, Z = 3 
B)  bromine, Br, Z = 35 
C)  mercury, Hg, Z = 80 
D)  bismuth, Bi, Z = 83 
E)  sodium, Na, Z = 11

Exam 2: The Components of Matter

Atoms of one element cannot be converted to another element by any known method.

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: -5.92; -4.44; -2.96; -8.88. The units are arbitrary. What is the likely value of the electronic charge in these arbitrary units?

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

Ferric oxide is used as a pigment in metal polishing. Which of the following is its formula?

Which of the following compounds is covalent?

Which of the following compounds is ionic?

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Which of the following is a metalloid?

In nature, some elements exist as molecules, while others do not.

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

The compound, NaH2PO4, is present in many baking powders. What is its name?

Sodium chromate is used to protect iron from corrosion and rusting. Determine its molecular mass.

a. Give the names of the following ions: (i) O22- (ii) SO42- b. Write down the formulas of the following ions: (i) ammonium (ii) nitrate

What is the name of P4Se3?

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Which one of the following combinations of names and formulas of ions is incorrect?

Which one of the following combinations of names and formulas is incorrect?

For each of the following names, write down the corresponding formula, including charge where appropriate (atomic numbers and mass numbers are not required): a. zinc ion b. nitrite ion c. carbonic acid d. cyanide ion

All neutral atoms of tin have 50 protons and 50 electrons.

Which of the following is a non-metal?

Keys to the Study of Chemistry

Stoichiometry of Formulas and Equations

The Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

The compound, NaH₂PO₄, is present in many baking powders. What is its name?

a. Give the names of the following ions: (i) O₂^2- (ii) SO₄^2- b. Write down the formulas of the following ions: (i) ammonium (ii) nitrate

What is the name of P₄Se₃?

What is the name of the acid formed when HClO₄liquid is dissolved in water?