Question 1

Which one of the following is false concerning tritium?

Accepted Answer

A)  The atomic number of tritium is 1. 
B)  It has the same chemical properties as protium but reacts more slowly. 
C)  It is radioactive, emitting alpha particles with a half- life of 12.3 yr. 
D)  It can be produced by neutron bombardment of lithium- 6. 
E)  It is formed continuously in the upper atmosphere. 
A)  The atomic number of tritium is 1. 
B)  It has the same chemical properties as protium but reacts more slowly. 
C)  It is radioactive, emitting alpha particles with a half- life of 12.3 yr. 
D)  It can be produced by neutron bombardment of lithium- 6. 
E)  It is formed continuously in the upper atmosphere.

Question 2

If a metal forms more than one oxide, the acidic character of the oxide increases as the oxidation state of the metal .

Accepted Answer

The answer of If a metal forms more than one...

Question 3

What is the oxidation state of oxygen in the superoxide ion?

Accepted Answer

The answer of What is the oxidation state of oxygen...

Question 4

I am a highly polr, strongly hydrogen- bonded liquid with a density of 1.47 g/cm3. I can decompose to form O2. Who am I ?

Accepted Answer

Question 5

To produce carbon black, _.

Accepted Answer

A)  graphite is cooled to - 273° C 
B)  diamond is exposed to extremely high pressures and temperatures 
C)  coal is strongly heated in the absence of oxygen 
D)  hydrocarbons such as methane are heated in a very limited supply of oxygen 
E)  wood is strongly heated in the absence of oxygen 
A)  graphite is cooled to - 273° C 
B)  diamond is exposed to extremely high pressures and temperatures 
C)  coal is strongly heated in the absence of oxygen 
D)  hydrocarbons such as methane are heated in a very limited supply of oxygen 
E)  wood is strongly heated in the absence of oxygen

Question 6

The major commercial use of carbon dioxide is .

Accepted Answer

A)  refrigeration 
B)  production of carbonated beverages 
C)  production of fertilizers 
D)  manufacture of baking soda 
E)  manufacture of washing soda 
A)  refrigeration 
B)  production of carbonated beverages 
C)  production of fertilizers 
D)  manufacture of baking soda 
E)  manufacture of washing soda

Question 7

What is the coefficient of NO2 when the following disproportionation reaction is balanced
__________ ?

Accepted Answer

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

Question 8

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 n

Question 9

Hydrogen can combine with _ to form a metallic hydride.

Accepted Answer

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

Question 10

All oxides are ionic compounds.

Accepted Answer

A) True 
 B)False

Question 11

Air containing 4% H2 can be explosive.

Accepted Answer

A) True 
 B)False

Question 12

is produced when coal is heated strongly in the absence of air.

Accepted Answer

A)  Buckminsterfullerene 
B)  Charcoal 
C)  Sulfur dioxide 
D)  Carbon black 
E)  Coke 
A)  Buckminsterfullerene 
B)  Charcoal 
C)  Sulfur dioxide 
D)  Carbon black 
E)  Coke

Question 13

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

Accepted Answer

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

Question 14

Soda- lime glass contains

Accepted Answer

A)  SiO2, CO2, and citric acid 
B)  SiO2, CO2, Na2O 
C)  pure SiO2 
D)  SiO2 and aluminum 
E)  SiO2, CaO, and Na2O 
A)  SiO2, CO2, and citric acid 
B)  SiO2, CO2, Na2O 
C)  pure SiO2 
D)  SiO2 and aluminum 
E)  SiO2, CaO, and Na2O

Question 15

Which halogen forms an oxyacid with the formula HXO2  ?

Accepted Answer

A)  fluorine 
B)  bromine 
C)  astatine 
D)  iodine 
E)  chlorine 
A)  fluorine 
B)  bromine 
C)  astatine 
D)  iodine 
E)  chlorine

Question 16

The interhalogen compound ICl3 can form but BrCl3 cannot form. This is because

Accepted Answer

A)  bromine is not electronegative enough to react with chlorine. 
B)  iodine can have a negative oxidation state but bromine cannot. 
C)  bromine is too electronegative to react with chlorine. 
D)  iodine is large enough to accommodate three chlorine atoms around itself 
E)  iodine can have a positive oxidation state but bromine cannot. 
A)  bromine is not electronegative enough to react with chlorine. 
B)  iodine can have a negative oxidation state but bromine cannot. 
C)  bromine is too electronegative to react with chlorine. 
D)  iodine is large enough to accommodate three chlorine atoms around itself 
E)  iodine can have a positive oxidation state but bromine cannot.

Question 17

The primary commercial use of oxygen is .

Accepted Answer

A)  for the treatment of respiratory distress 
B)  to charge oxygen- containing cylinders used by deep- sea divers 
C)  in oxyacetylene welding 
D)  as an oxidizing agent 
E)  as a household bleach 
A)  for the treatment of respiratory distress 
B)  to charge oxygen- containing cylinders used by deep- sea divers 
C)  in oxyacetylene welding 
D)  as an oxidizing agent 
E)  as a household bleach

Question 18

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

Accepted Answer

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

Question 19

Which group 3A element is a metalloid _?

Accepted Answer

A)  Al 
B)  Ga 
C)  Tl 
D)  In 
E)  B 
A)  Al 
B)  Ga 
C)  Tl 
D)  In 
E)  B

Question 20

The dissolution of 1.0 mol of to 1.0 L of water at 25°C would yield the most acidic solution.

Accepted Answer

A)  SO3  
B)  CO2  
C)  CaO 
D)  MgO 
E)  CO 
A)  SO3  
B)  CO2  
C)  CaO 
D)  MgO 
E)  CO

Exam 22: Chemistry of the Nonmetals

Which one of the following is false concerning tritium?

If a metal forms more than one oxide, the acidic character of the oxide increases as the oxidation state of the metal .

What is the oxidation state of oxygen in the superoxide ion?

I am a highly polr, strongly hydrogen- bonded liquid with a density of 1.47 g/cm3. I can decompose to form O2. Who am I ?

To produce carbon black, _.

The major commercial use of carbon dioxide is .

What is the coefficient of NO2 when the following disproportionation reaction is balanced __________ ?

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

Hydrogen can combine with _ to form a metallic hydride.

All oxides are ionic compounds.

Air containing 4% H2 can be explosive.

is produced when coal is heated strongly in the absence of air.

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

Soda- lime glass contains

Which halogen forms an oxyacid with the formula HXO2 ?

The interhalogen compound ICl3 can form but BrCl3 cannot form. This is because

The primary commercial use of oxygen is .

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

Which group 3A element is a metalloid _?

The dissolution of 1.0 mol of to 1.0 L of water at 25°C would yield the most acidic solution.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

I am a highly polr, strongly hydrogen- bonded liquid with a density of 1.47 g/cm³. I can decompose to form O₂. Who am I ?

What is the coefficient of NO₂when the following disproportionation reaction is balanced __________ ?

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

Air containing 4% H₂can be explosive.

Which halogen forms an oxyacid with the formula HXO₂?

The interhalogen compound ICl₃can form but BrCl₃cannot form. This is because

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