Question 1

What is the name of the acid formed when H2S gas is dissolved in water?

Accepted Answer

A) sulfuric acid 
B) sulfurous acid 
C) hydrosulfuric acid 
D) hydrosulfurous acid 
E) sulfidic acid 
A) sulfuric acid 
B) sulfurous acid 
C) hydrosulfuric acid 
D) hydrosulfurous acid 
E) sulfidic acid

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

What is the formula for lithium nitrite?

Accepted Answer

A) LiNO2 
B) Li2NO2 
C) LiNO3 
D) Li2NO3 
E) LiNO4  
A) LiNO2 
B) Li2NO2 
C) LiNO3 
D) Li2NO3 
E) LiNO4

Question 4

Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers.What is its formula?

Accepted Answer

A) NaO 
B) NaO2 
C) Na2O2 
D) Na2O 
E) NaH2O2  
A) NaO 
B) NaO2 
C) Na2O2 
D) Na2O 
E) NaH2O2

Question 5

Millikan's oil-drop experiment

Accepted Answer

A) established the charge on an electron. 
B) showed that all oil drops carried the same charge. 
C) provided support for the nuclear model of the atom. 
D) suggested that some oil drops carried fractional numbers of electrons. 
E) suggested the presence of a neutral particle in the atom. 
A) established the charge on an electron. 
B) showed that all oil drops carried the same charge. 
C) provided support for the nuclear model of the atom. 
D) suggested that some oil drops carried fractional numbers of electrons. 
E) suggested the presence of a neutral particle in the atom.

Question 6

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

Accepted Answer

A) True 
 B)False

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

Barium fluoride is used in embalming and in glass manufacturing.Which of the following gives the formula and bonding for barium fluoride?

Accepted Answer

A) BaF2,ionic compound 
B) BaF2,covalent compound 
C) BaF,ionic compound 
D) BaF,covalent compound 
E) Ba2F,ionic compound 
A) BaF2,ionic compound 
B) BaF2,covalent compound 
C) BaF,ionic compound 
D) BaF,covalent compound 
E) Ba2F,ionic compound

Question 9

The colorless substance,MgF2,is used in the ceramics and glass industry.What is its name?

Accepted Answer

A) magnesium difluoride 
B) magnesium fluoride 
C) magnesium(II)fluoride 
D) monomagnesium difluoride 
E) none of these choices is correct,since they are all misspelled 
A) magnesium difluoride 
B) magnesium fluoride 
C) magnesium(II)fluoride 
D) monomagnesium difluoride 
E) none of these choices is correct,since they are all misspelled

Question 10

Tetrasulfur dinitride decomposes explosively when heated.What is its formula?

Accepted Answer

A) S2N4 
B) S4N2 
C) 4SN2 
D) S4N 
E) S2N 
A) S2N4 
B) S4N2 
C) 4SN2 
D) S4N 
E) S2N

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

Dalton's atomic theory has required some modifications in the light of subsequent discoveries.For any two appropriate postulates of Dalton's atomic theory
a.state the postulate in its original form
b.In one sentence,describe why the postulate has needed modification.

Accepted Answer

Matter consists of atoms which are indiv

Question 13

Atoms X,Y,Z,and R have the following nuclear compositions:  
Which two are isotopes?

Accepted Answer

A) X & Y 
B) X & R 
C) Y & R 
D) Z & R 
E) X & Z 
A) X & Y 
B) X & R 
C) Y & R 
D) Z & R 
E) X & Z

Question 14

When an alkali metal combines with a non-metal,a covalent bond is normally formed.

Accepted Answer

A) True 
 B)False

Question 15

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following ions occurs commonly?

Accepted Answer

A) P3+ 
B) Br7+ 
C) O6+ 
D) Ca2+ 
E) K- 
A) P3+ 
B) Br7+ 
C) O6+ 
D) Ca2+ 
E) K-

Question 17

Compound 1 has a composition of 46.7 mass % of element A and 53.3 mass % of element B.A and B also form a second binary compound (compound 2).If the compositions of the two compounds are consistent with the law of multiple proportions,which of the following compositions could be that of compound 2?

Accepted Answer

A) 23.4 mass % A 76.6 mass % B 
B) 30.4 mass % A 69.6 mass % B 
C) 33.3 mass % A 66.7 mass % B 
D) 53.3 mass % A 46.7 mass % B 
E) 73.3 mass % A 26.7 mass % B 
A) 23.4 mass % A 76.6 mass % B 
B) 30.4 mass % A 69.6 mass % B 
C) 33.3 mass % A 66.7 mass % B 
D) 53.3 mass % A 46.7 mass % B 
E) 73.3 mass % A 26.7 mass % B

Question 18

a.Give the names of the following ions:
(i)NH4+
  (ii)SO32-
 b.Write down the formulas of the following ions:
(i)aluminum
(ii)carbonate

Accepted Answer

a.(i)ammon

Question 19

Silver chloride is used in photographic emulsions.What is its formula?

Accepted Answer

A) Ag2Cl3 
B) Ag2Cl 
C) AgCl3 
D) AgCl2 
E) AgCl 
A) Ag2Cl3 
B) Ag2Cl 
C) AgCl3 
D) AgCl2 
E) AgCl

Question 20

Which one of the following formulas of ionic compounds is the least likely to be correct?

Accepted Answer

A) NH4Cl 
B) Ba(OH)2 
C) Na2SO4 
D) Ca2NO3 
E) Cu(CN)2  
A) NH4Cl 
B) Ba(OH)2 
C) Na2SO4 
D) Ca2NO3 
E) Cu(CN)2

Exam 2: The Components of Matter

What is the name of the acid formed when H2S gas is dissolved in water?

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

What is the formula for lithium nitrite?

Sodium peroxide is an oxidizer used to bleach animal and vegetable fibers.What is its formula?

Millikan's oil-drop experiment

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

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

Barium fluoride is used in embalming and in glass manufacturing.Which of the following gives the formula and bonding for barium fluoride?

The colorless substance,MgF2,is used in the ceramics and glass industry.What is its name?

Tetrasulfur dinitride decomposes explosively when heated.What is its formula?

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

Dalton's atomic theory has required some modifications in the light of subsequent discoveries.For any two appropriate postulates of Dalton's atomic theory a.state the postulate in its original form b.In one sentence,describe why the postulate has needed modification.

Atoms X,Y,Z,and R have the following nuclear compositions: Which two are isotopes?

When an alkali metal combines with a non-metal,a covalent bond is normally formed.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Which of the following ions occurs commonly?

Compound 1 has a composition of 46.7 mass % of element A and 53.3 mass % of element B.A and B also form a second binary compound (compound 2).If the compositions of the two compounds are consistent with the law of multiple proportions,which of the following compositions could be that of compound 2?

a.Give the names of the following ions: (i)NH4+ (ii)SO32- b.Write down the formulas of the following ions: (i)aluminum (ii)carbonate

Silver chloride is used in photographic emulsions.What is its formula?

Which one of the following formulas of ionic compounds is the least likely to be correct?

Keys to the Study of Chemistry

Stoichiometry of Formulas and Equations

Three 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 Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

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 Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

What is the name of the acid formed when H₂S gas is dissolved in water?

The colorless substance,MgF₂,is used in the ceramics and glass industry.What is its name?

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

a.Give the names of the following ions: (i)NH₄⁺ (ii)SO₃^2- b.Write down the formulas of the following ions: (i)aluminum (ii)carbonate