Question 1

Hydrogen can form hydride ions. Elements in group __________ typically form ions with the same charge as the hydride ion.

Accepted Answer

A) 1A 
B) 2A 
C) 6A 
D) 7A 
E) 3A 
A) 1A 
B) 2A 
C) 6A 
D) 7A 
E) 3A D

Question 2

The correct name of H2CO3 is __________.

Accepted Answer

A) hydrogen carbide 
B) hydrogen carbonate ion 
C) carbonate ion 
D) carbonic acid 
E) carboxylic acid 
A) hydrogen carbide 
B) hydrogen carbonate ion 
C) carbonate ion 
D) carbonic acid 
E) carboxylic acid D

Question 3

What is the oxidation state of xenon in XeO2F2?

Accepted Answer

A) 0 
B) +4 
C) +8 
D) +2 
E) +6 
A) 0 
B) +4 
C) +8 
D) +2 
E) +6 E

Question 4

Hydrogen can combine with __________ to form a metallic hydride.

Accepted Answer

A) an element from group 5A 
B) an element from group 7A 
C) an element from group 8A 
D) an element from group 1A 
E) an element from group 6A 
A) an element from group 5A 
B) an element from group 7A 
C) an element from group 8A 
D) an element from group 1A 
E) an element from group 6A

Question 5

Of Li, K, P and Ne which is the least electronegative?

Accepted Answer

The answer of Of Li, K, P and Ne which...

Question 6

Describe the major difference in the charge distribution in CH4 and SiH4.

Accepted Answer

Even though both C-H and Si-H bonds are

Question 7

H2 is reacted with __________ to produce methanol.

Accepted Answer

Question 8

The oxidation number of N in HNO2 is __________.

Accepted Answer

A) +1 
B) +2 
C) +3 
D) +4 
E) +5 
A) +1 
B) +2 
C) +3 
D) +4 
E) +5

Question 9

Which equation correctly represents the reaction between silica and hydrofluoric acid?

Accepted Answer

A) SiCl4  + 4HF → SiF4 + 4HCl 
B) SiO2 + 6HF → H2SiF6 + 2H2O 
C) SiCl2 + 2HF → SiF2 + 2HCl 
D) SiH4 + 4HF → SiF4 + 4H2 
E) none of the above 
A) SiCl4  + 4HF → SiF4 + 4HCl 
B) SiO2 + 6HF → H2SiF6 + 2H2O 
C) SiCl2 + 2HF → SiF2 + 2HCl 
D) SiH4 + 4HF → SiF4 + 4H2 
E) none of the above

Question 10

Xenon can have oxidation states of 2, 4, 6, and 8.

Accepted Answer

A) True 
 B)False

Question 11

Which one of the following is false concerning buckminsterfullerene?

Accepted Answer

A) It is the most recently discovered crystalline allotrope of carbon. 
B) It consists of individual molecules like C60 and C70. 
C) It is a molecular form of carbon. 
D) It is made up of Cl2 molecules. 
E) It is made up of molecules that resemble soccer balls. 
A) It is the most recently discovered crystalline allotrope of carbon. 
B) It consists of individual molecules like C60 and C70. 
C) It is a molecular form of carbon. 
D) It is made up of Cl2 molecules. 
E) It is made up of molecules that resemble soccer balls.

Question 12

Briefly explain why carbon and silicon can form oxides with such different physical properties, gaseous CO2 and solid SiO2.

Accepted Answer

Carbon atoms are small enough to form π

Question 13

In a proton transfer reaction the weaker a Br∅nsted-Lowry acid the __________ is its conjugate.

Accepted Answer

The answer of In a proton transfer reaction the weaker...

Question 14

Sodium borohydride, NaBH4, is a strong reducing agent because __________.

Accepted Answer

A) Na+ is easily reduced to Na (s). 
B) boron easily changes its oxidation number from +3 to -3 
C) boron is readily oxidized from -3 oxidation state to +3 
D) hydrogen can be easily oxidized from -1 oxidation state to +1 
E) hydrogen is easily reduced from +1 oxidation state to 0 
A) Na+ is easily reduced to Na (s). 
B) boron easily changes its oxidation number from +3 to -3 
C) boron is readily oxidized from -3 oxidation state to +3 
D) hydrogen can be easily oxidized from -1 oxidation state to +1 
E) hydrogen is easily reduced from +1 oxidation state to 0

Question 15

The disilicate ion is __________.

Accepted Answer

A) Si2O88- 
B) Si2O76- 
C) Si2O84- 
D) Si2O86- 
E) Si2O72- 
A) Si2O88- 
B) Si2O76- 
C) Si2O84- 
D) Si2O86- 
E) Si2O72-

Question 16

Air containing 4% H2 can be explosive.

Accepted Answer

A) True 
 B)False

Question 17

What is the oxidation state of carbon in the carbonate ion?

Accepted Answer

A) +4 
B) +2 
C) 0 
D) -2 
E) -4 
A) +4 
B) +2 
C) 0 
D) -2 
E) -4

Question 18

Which of the following react with oxygen to form superoxides?

Accepted Answer

A) Ca 
B) Na 
C) K 
D) Sr 
E) Ba 
A) Ca 
B) Na 
C) K 
D) Sr 
E) Ba

Question 19

Consider the following xenon compounds: (i)XeF2 (ii)XeF4 (iii)XeO4 (iv)XeOF4 (v)XeO3
Which of the compounds is(are)polar?

Accepted Answer

A) (i)only 
B) (ii)and (iii) 
C) (iv)only 
D) (iii)and (iv) 
E) (iv)and (v) 
A) (i)only 
B) (ii)and (iii) 
C) (iv)only 
D) (iii)and (iv) 
E) (iv)and (v)

Question 20

Only the most active metals react with oxygen to form __________.

Accepted Answer

A) oxides 
B) superoxides 
C) peroxides 
D) ozonides 
E) water 
A) oxides 
B) superoxides 
C) peroxides 
D) ozonides 
E) water

Exam 22: Chemistry of the Nonmetals

Hydrogen can form hydride ions. Elements in group __________ typically form ions with the same charge as the hydride ion.

The correct name of H2CO3 is __________.

What is the oxidation state of xenon in XeO2F2?

Hydrogen can combine with __________ to form a metallic hydride.

Of Li, K, P and Ne which is the least electronegative?

Describe the major difference in the charge distribution in CH4 and SiH4.

H2 is reacted with __________ to produce methanol.

The oxidation number of N in HNO2 is __________.

Which equation correctly represents the reaction between silica and hydrofluoric acid?

Xenon can have oxidation states of 2, 4, 6, and 8.

Which one of the following is false concerning buckminsterfullerene?

Briefly explain why carbon and silicon can form oxides with such different physical properties, gaseous CO2 and solid SiO2.

In a proton transfer reaction the weaker a Br∅nsted-Lowry acid the __________ is its conjugate.

Sodium borohydride, NaBH4, is a strong reducing agent because __________.

The disilicate ion is __________.

Air containing 4% H2 can be explosive.

What is the oxidation state of carbon in the carbonate ion?

Which of the following react with oxygen to form superoxides?

Consider the following xenon compounds: (i)XeF2 (ii)XeF4 (iii)XeO4 (iv)XeOF4 (v)XeO3 Which of the compounds is(are)polar?

Only the most active metals react with oxygen to form __________.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The correct name of H₂CO₃ is __________.

What is the oxidation state of xenon in XeO₂F₂?

Describe the major difference in the charge distribution in CH₄ and SiH₄.

H₂ is reacted with __________ to produce methanol.

The oxidation number of N in HNO₂ is __________.

Briefly explain why carbon and silicon can form oxides with such different physical properties, gaseous CO₂ and solid SiO₂.

Sodium borohydride, NaBH₄, is a strong reducing agent because __________.

Air containing 4% H₂ can be explosive.

Consider the following xenon compounds: (i)XeF₂ (ii)XeF₄ (iii)XeO₄ (iv)XeOF₄ (v)XeO₃ Which of the compounds is(are)polar?