Question 1

In the following chemical equation   the products (when the equation is balanced) are

Accepted Answer

A)  3NaO + PH6 
B)  3NaOH + PH3 
C)  3NaH + POH3 
D)  NaOH + 3PH 
E)  H2PO3 + 3NaH 
A)  3NaO + PH6 
B)  3NaOH + PH3 
C)  3NaH + POH3 
D)  NaOH + 3PH 
E)  H2PO3 + 3NaH

Question 2

Chains of silica tetrahedra are called .

Accepted Answer

The answer of Chains of silica tetrahedra are called ....

Question 3

What are the products of the reaction of PCl3 (g) and water?

Accepted Answer

A)  elemental phosphorus and hydrochloric acid 
B)  elemental phosphorus and chlorine gas 
C)  phosphoric acid and chlorine gas 
D)  phosphoric acid and hydrochloric acid 
E)  phosphoric acid and phosphorous acid 
A)  elemental phosphorus and hydrochloric acid 
B)  elemental phosphorus and chlorine gas 
C)  phosphoric acid and chlorine gas 
D)  phosphoric acid and hydrochloric acid 
E)  phosphoric acid and phosphorous acid

Question 4

How many oxygen atoms are bonded to each silicon atom in SiO2?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  none 
A)  1 
B)  2 
C)  3 
D)  4 
E)  none

Question 5

The danger from mixing ammonia with bleach is the production of .

Accepted Answer

The answer of The danger from mixing ammonia with bleach...

Question 6

What group 5A element is the most metallic?

Accepted Answer

The answer of What group 5A element is the most...

Question 7

Which equation correctly represents what happens when NO2 dissolves in water?

Accepted Answer

A)  NO2 (g) + H2O (l) → H2O2 (aq) + NO (g) 
B)  2NO2 (g) + H2O (l) → 2H+ (aq) + NO42- (aq) + NO (g) 
C)  NO2 (g) + H2O (l) → 2H+ (aq) + NO3- (aq) 
D)  2NO2 (g) + 2H2O (l) → 2 HNO2 (aq) + O2 (g) + H2 (g) 
E)  3NO2 (g) + H2O (l) → 2H+ (aq) + 2NO3- (aq) + NO (g) 
A)  NO2 (g) + H2O (l) → H2O2 (aq) + NO (g) 
B)  2NO2 (g) + H2O (l) → 2H+ (aq) + NO42- (aq) + NO (g) 
C)  NO2 (g) + H2O (l) → 2H+ (aq) + NO3- (aq) 
D)  2NO2 (g) + 2H2O (l) → 2 HNO2 (aq) + O2 (g) + H2 (g) 
E)  3NO2 (g) + H2O (l) → 2H+ (aq) + 2NO3- (aq) + NO (g)

Question 8

Which one of the following is false concerning buckminsterfullerene?

Accepted Answer

A)  It consists of individual molecules like C60 and C70. 
B)  It is made up of molecules that resemble soccer balls. 
C)  It is made up of Cl2molecules. 
D)  It is the most recently discovered crystalline allotrope of carbon. 
E)  It is a molecular form of carbon. 
A)  It consists of individual molecules like C60 and C70. 
B)  It is made up of molecules that resemble soccer balls. 
C)  It is made up of Cl2molecules. 
D)  It is the most recently discovered crystalline allotrope of carbon. 
E)  It is a molecular form of carbon.

Question 9

What is an acetylide?

Accepted Answer

a carbide

Question 10

Why are nitric acid solutions sometimes yellowish?

Accepted Answer

Photochemical decomp

Question 11

Of the following compounds, which is the most stable?

Accepted Answer

A)  XeO3  
B)  XeF2  
C)  XeO2F2  
D)  XeF6  
E)  XeOF4 
A)  XeO3  
B)  XeF2  
C)  XeO2F2  
D)  XeF6  
E)  XeOF4

Question 12

Although CaCO3 is essentially insoluble in pure water, it dissolves slowly in acidic ground water due to formation of _ _.

Accepted Answer

A)  insoluble Ca(OH)2 
B)  soluble Ca(HCO3)2 
C)  insoluble Ca(HCO3)2 
D)  soluble Ca(OH)2 
E)  soluble CaO 
A)  insoluble Ca(OH)2 
B)  soluble Ca(HCO3)2 
C)  insoluble Ca(HCO3)2 
D)  soluble Ca(OH)2 
E)  soluble CaO

Question 13

What is the F-Xe-F bond angle in XeF2?

Accepted Answer

A)  109° 
B)  60° 
C)  90° 
D)  120° 
E)  180° 
A)  109° 
B)  60° 
C)  90° 
D)  120° 
E)  180°

Question 14

Additives can be used in soda- lime glass to alter its .

Accepted Answer

A)  hardness 
B)  ability to withstand temperature change 
C)  color 
D)  melting point 
E)  any of the above 
A)  hardness 
B)  ability to withstand temperature change 
C)  color 
D)  melting point 
E)  any of the above

Question 15

Pyrex glass is formed by adding an oxide of to soda- lime glass.

Accepted Answer

A)  silver 
B)  cobalt 
C)  lead 
D)  phosphorous 
E)  boron 
A)  silver 
B)  cobalt 
C)  lead 
D)  phosphorous 
E)  boron

Question 16

The acid and salts of which halogen- oxyanion are the most stable?

Accepted Answer

The answer of The acid and salts of which halogen-...

Question 17

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

Accepted Answer

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

Question 18

Which equation correctly represents the reaction between carbon dioxide and water?

Accepted Answer

A)  CO2 (aq) + H2O (l)→ H2 (g) + CO (g) + O2 (g) 
B)  CO2 (aq) + 2H2O (l) → CH4 (g) + 2O2 (aq) 
C)  CO2 (aq) + H2O (l) → H2O2 (aq) + CO (g) 
D)  CO2 (aq) + H2O (l) → H2CO (aq) + O2 (g) 
E)  CO2 (aq) + H2O (l) → H2CO3 (aq) 
A)  CO2 (aq) + H2O (l)→ H2 (g) + CO (g) + O2 (g) 
B)  CO2 (aq) + 2H2O (l) → CH4 (g) + 2O2 (aq) 
C)  CO2 (aq) + H2O (l) → H2O2 (aq) + CO (g) 
D)  CO2 (aq) + H2O (l) → H2CO (aq) + O2 (g) 
E)  CO2 (aq) + H2O (l) → H2CO3 (aq)

Question 19

The instability of xenon fluorides is due to its negative enthalpy of formation.

Accepted Answer

A) True 
 B)False

Question 20

Isotopes of hydrogen

Accepted Answer

A)  have different atomic numbers and different mass numbers. 
B)  have different atomic numbers and the same mass number. 
C)  are exactly alike. 
D)  have the same atomic number and the same mass number. 
E)  have the same atomic number and different mass numbers. 
A)  have different atomic numbers and different mass numbers. 
B)  have different atomic numbers and the same mass number. 
C)  are exactly alike. 
D)  have the same atomic number and the same mass number. 
E)  have the same atomic number and different mass numbers.

Exam 22: Chemistry of the Nonmetals

In the following chemical equation the products (when the equation is balanced) are

Chains of silica tetrahedra are called .

What are the products of the reaction of PCl3 (g) and water?

How many oxygen atoms are bonded to each silicon atom in SiO2?

The danger from mixing ammonia with bleach is the production of .

What group 5A element is the most metallic?

Which equation correctly represents what happens when NO2 dissolves in water?

Which one of the following is false concerning buckminsterfullerene?

What is an acetylide?

Why are nitric acid solutions sometimes yellowish?

Of the following compounds, which is the most stable?

Although CaCO3 is essentially insoluble in pure water, it dissolves slowly in acidic ground water due to formation of _ _.

What is the F-Xe-F bond angle in XeF2?

Additives can be used in soda- lime glass to alter its .

Pyrex glass is formed by adding an oxide of to soda- lime glass.

The acid and salts of which halogen- oxyanion are the most stable?

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

Which equation correctly represents the reaction between carbon dioxide and water?

The instability of xenon fluorides is due to its negative enthalpy of formation.

Isotopes of hydrogen

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

What are the products of the reaction of PCl₃(g) and water?

How many oxygen atoms are bonded to each silicon atom in SiO₂?

Which equation correctly represents what happens when NO₂dissolves in water?

Although CaCO₃is essentially insoluble in pure water, it dissolves slowly in acidic ground water due to formation of _ _.

What is the F-Xe-F bond angle in XeF₂?