Question 1

Which of the following substances is a superoxide

Accepted Answer

A)  KO2 
B)  Na2O2 
C)  CO2 
D)  CaO 
E)  Al2O3 
A)  KO2 
B)  Na2O2 
C)  CO2 
D)  CaO 
E)  Al2O3

Question 2

Which of the following will oxidize gold

Accepted Answer

A)  concentrated nitric acid 
B)  concentrated hydrochloric acid 
C)  aqua regia, a mixture of concentrated nitric acid and concentrated hydrochloric acid 
D)  all of the above can oxidize gold 
E)  none of the above can oxidize gold because it is a noble metal and too low on the activity series 
A)  concentrated nitric acid 
B)  concentrated hydrochloric acid 
C)  aqua regia, a mixture of concentrated nitric acid and concentrated hydrochloric acid 
D)  all of the above can oxidize gold 
E)  none of the above can oxidize gold because it is a noble metal and too low on the activity series

Question 3

The main commercial source of bromine is

Accepted Answer

A)  silver bromide ore. 
B)  seawater. 
C)  the Frasch process. 
D)  phosphate rock. 
E)  the Ostwald process. 
A)  silver bromide ore. 
B)  seawater. 
C)  the Frasch process. 
D)  phosphate rock. 
E)  the Ostwald process.

Question 4

Which of these reactions is an example of nitrogen fixation

Accepted Answer

A) 2N2O $\rarr$ 2N2 + O2 
B) NH3 + H2O $\rarr$ NH4+ + OH- 
C) N2 + O2 $\rarr$ 2NO 
D) 2NO2 + H2O $\rarr$ HNO2 + HNO3 
E) 2NO + O2 $\rarr$ 2NO2 
A) 2N2O $\rarr$ 2N2 + O2 
B) NH3 + H2O $\rarr$ NH4+ + OH- 
C) N2 + O2 $\rarr$ 2NO 
D) 2NO2 + H2O $\rarr$ HNO2 + HNO3 
E) 2NO + O2 $\rarr$ 2NO2

Question 5

Determine all of the covalent hydrides from the compounds listed below.
I. CaH2 
II. H2S 
III. SiH4

Accepted Answer

A)  I only 
B)  II only 
C)  I and II 
D)  I and III 
E)  II and III 
A)  I only 
B)  II only 
C)  I and II 
D)  I and III 
E)  II and III

Question 6

The term catenation describes the

Accepted Answer

A)  tendency of carbon atoms to form cations in the presence of alkali metals. 
B)  process of creating synthetic gas from coal. 
C)  extraction of precious metals with sodium or potassium cyanide. 
D)  ability of carbon atoms to form long chains and rings. 
E)  interaction of Group 4A elements with Group 8A elements at high pressures and temperatures to form coordination compounds. 
A)  tendency of carbon atoms to form cations in the presence of alkali metals. 
B)  process of creating synthetic gas from coal. 
C)  extraction of precious metals with sodium or potassium cyanide. 
D)  ability of carbon atoms to form long chains and rings. 
E)  interaction of Group 4A elements with Group 8A elements at high pressures and temperatures to form coordination compounds.

Question 7

Alkali metal hydrides are very reactive with water, forming H2 gas.

Accepted Answer

A) True 
 B)False

Question 8

When phosphate rock, Ca3(PO4)2(s), is converted to phosphorus,

Accepted Answer

A)  one of the products of the reaction is water. 
B)  sulfuric acid is added to generate insoluble calcium sulfate. 
C)  hydrogen is used to reduce the phosphate to phosphorus. 
D)  silica is added to form a calcium silicate slag. 
E)  oxygen must be added to prevent reaction of P4. 
A)  one of the products of the reaction is water. 
B)  sulfuric acid is added to generate insoluble calcium sulfate. 
C)  hydrogen is used to reduce the phosphate to phosphorus. 
D)  silica is added to form a calcium silicate slag. 
E)  oxygen must be added to prevent reaction of P4.

Question 9

Which of these substances is the active ingredient in ordinary household bleach

Accepted Answer

A)  HCl 
B)  Cl2 
C)  NaCl 
D)  NaClO 
E)  NaClO4 
A)  HCl 
B)  Cl2 
C)  NaCl 
D)  NaClO 
E)  NaClO4

Question 10

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

Accepted Answer

A) True 
 B)False

Question 11

It is especially dangerous to mix cyanide salts with acids because the cyanide ion reacts with acid to form hydrogen cyanide, a very weak acid that comes out of solution as a gas. Inhaled in even very small amounts it can rapidly cause death.

Accepted Answer

A) True 
 B)False

Question 12

In which of the following compounds is nitrogen in a positive oxidation state

Accepted Answer

A)  NH3 
B)  N2H4 
C)  NH2OH 
D)  N2 
E)  NO 
A)  NH3 
B)  N2H4 
C)  NH2OH 
D)  N2 
E)  NO

Which of the following substances is a superoxide

Which of the following will oxidize gold

The main commercial source of bromine is

Which of these reactions is an example of nitrogen fixation

Determine all of the covalent hydrides from the compounds listed below. I. CaH₂ II. H₂S III. SiH₄

The term catenation describes the

Alkali metal hydrides are very reactive with water, forming H₂ gas.

When phosphate rock, Ca₃(PO₄)₂(s), is converted to phosphorus,

Which of these substances is the active ingredient in ordinary household bleach

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

It is especially dangerous to mix cyanide salts with acids because the cyanide ion reacts with acid to form hydrogen cyanide, a very weak acid that comes out of solution as a gas. Inhaled in even very small amounts it can rapidly cause death.

In which of the following compounds is nitrogen in a positive oxidation state

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Exam 22: Nonmetallic Elements and Their Compounds

Which of the following substances is a superoxide

Which of the following will oxidize gold

The main commercial source of bromine is

Which of these reactions is an example of nitrogen fixation

Determine all of the covalent hydrides from the compounds listed below. I. CaH2 II. H2S III. SiH4

The term catenation describes the

Alkali metal hydrides are very reactive with water, forming H2 gas.

When phosphate rock, Ca3(PO4)2(s), is converted to phosphorus,

Which of these substances is the active ingredient in ordinary household bleach

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

It is especially dangerous to mix cyanide salts with acids because the cyanide ion reacts with acid to form hydrogen cyanide, a very weak acid that comes out of solution as a gas. Inhaled in even very small amounts it can rapidly cause death.

In which of the following compounds is nitrogen in a positive oxidation state

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Determine all of the covalent hydrides from the compounds listed below. I. CaH₂ II. H₂S III. SiH₄

Alkali metal hydrides are very reactive with water, forming H₂ gas.

When phosphate rock, Ca₃(PO₄)₂(s), is converted to phosphorus,