Question 1

The acidity of oxides of main group elements increases down a group, from top to bottom.

Accepted Answer

A) True 
 B)False

Question 2

What is the total number of lone pairs in NCl3?

Accepted Answer

A)  8 
B)  13 
C)  6 
D)  10 
E)  9 
A)  8 
B)  13 
C)  6 
D)  10 
E)  9

Question 3

Which of the following is not an isotope of hydrogen?

Accepted Answer

A)  Deuterium 
B)  Tritium 
C)  Hydronium 
D)  All of these are isotopes of hydrogen. 
A)  Deuterium 
B)  Tritium 
C)  Hydronium 
D)  All of these are isotopes of hydrogen.

Question 4

Which of the following is a commercial application of phosphate compounds?

Accepted Answer

A)  Detergents 
B)  Toothpaste 
C)  Fertilizers 
D)  Flame retardants 
E)  All of the answers are correct. 
A)  Detergents 
B)  Toothpaste 
C)  Fertilizers 
D)  Flame retardants 
E)  All of the answers are correct.

Question 5

One important feature of the chemistry of carbon is

Accepted Answer

A)  its large radius that allows other atoms to fit easily around it. 
B)  its low electronegativity that allows it to ionize easily. 
C)  its amphoteric behavior. 
D)  its ability to form multiple bonds with hydrogen. 
E)  its ability to catenate. 
A)  its large radius that allows other atoms to fit easily around it. 
B)  its low electronegativity that allows it to ionize easily. 
C)  its amphoteric behavior. 
D)  its ability to form multiple bonds with hydrogen. 
E)  its ability to catenate.

Question 6

________ is the charge (or oxidation number) of the hydrogen in an ionic hydride.

Accepted Answer

The answer of ________ is the charge (or oxidation number)...

Question 7

Nitrous oxide, N2O, is

Accepted Answer

A)  a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog. 
B)  a colorless gas used in the production of nitric acid. 
C)  a gas that supports combustion. 
D)  an allotrope of nitrogen. 
E)  a paramagnetic gas. 
A)  a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog. 
B)  a colorless gas used in the production of nitric acid. 
C)  a gas that supports combustion. 
D)  an allotrope of nitrogen. 
E)  a paramagnetic gas.

Question 8

What is the formal charge on the bromine atom in BrO3-?

Accepted Answer

A)  +2 
B)  -2 
C)  0 
D)  -1 
E)  +1 
A)  +2 
B)  -2 
C)  0 
D)  -1 
E)  +1

Question 9

Which of these has a nonpolar covalent bond (i.e., pure covalent)?

Accepted Answer

A)  Se-I 
B)  Na-Br 
C)  H-F 
D)  Cl-Cl 
E)  H-Cl 
A)  Se-I 
B)  Na-Br 
C)  H-F 
D)  Cl-Cl 
E)  H-Cl

Question 10

What name is given to a compound containing hydrogen and a metal or hydrogen and a nonmetal?

Accepted Answer

The answer of What name is given to a compound...

Question 11

Which of these choices is the electron configuration of a sulfide ion?

Accepted Answer

A)  [Ne] 
B)  [Ne]3s23p2 
C)  [Ar] 
D)  [Ne]3s23p1 
E)  [Ne]3s23p4 
A)  [Ne] 
B)  [Ne]3s23p2 
C)  [Ar] 
D)  [Ne]3s23p1 
E)  [Ne]3s23p4

Question 12

Explain how foods get a rancid taste.

Accepted Answer

Polyunsaturated molecules, whi

Question 13

How many covalent bonds will a nitrogen atom usually form?

Accepted Answer

A)  8 
B)  2 
C)  5 
D)  3 
E)  1 
A)  8 
B)  2 
C)  5 
D)  3 
E)  1

Question 14

Ozone is both a pollutant and a natural component of the atmosphere.

Accepted Answer

A) True 
 B)False

Question 15

The Haber process is the first step in the manufacture of sulfuric acid.

Accepted Answer

A) True 
 B)False

Question 16

What is the formal charge on the central nitrogen atom in N2O?

Accepted Answer

A)  -1 
B)  +2 
C)  0 
D)  -2 
E)  +1 
A)  -1 
B)  +2 
C)  0 
D)  -2 
E)  +1

Question 17

Which of these atoms is the most electronegative?

Accepted Answer

A)  Si 
B)  Cl 
C)  P 
D)  F 
E)  C 
A)  Si 
B)  Cl 
C)  P 
D)  F 
E)  C

Question 18

________ ________ are formed when molecular hydrogen combines directly with an alkali metal.

Accepted Answer

The answer of ________ ________ are formed when molecular hydrogen...

Question 19

What is the general electron configuration for atoms of the halogen group?

Accepted Answer

A)  ns2np6 
B)  ns1 
C)  ns2np7 
D)  ns2(n -1)d7 
E)  ns2np5 
A)  ns2np6 
B)  ns1 
C)  ns2np7 
D)  ns2(n -1)d7 
E)  ns2np5

Question 20

What type of bond is the C - Cl bond in CCl4?

Accepted Answer

A)  Nonpolar covalent 
B)  Ionic 
C)  Polar covalent 
D)  Polar ionic 
E)  Coordinate covalent 
A)  Nonpolar covalent 
B)  Ionic 
C)  Polar covalent 
D)  Polar ionic 
E)  Coordinate covalent

Exam 25: Organic Chemistry

The acidity of oxides of main group elements increases down a group, from top to bottom.

What is the total number of lone pairs in NCl3?

Which of the following is not an isotope of hydrogen?

Which of the following is a commercial application of phosphate compounds?

One important feature of the chemistry of carbon is

________ is the charge (or oxidation number) of the hydrogen in an ionic hydride.

Nitrous oxide, N2O, is

What is the formal charge on the bromine atom in BrO3-?

Which of these has a nonpolar covalent bond (i.e., pure covalent)?

What name is given to a compound containing hydrogen and a metal or hydrogen and a nonmetal?

Which of these choices is the electron configuration of a sulfide ion?

Explain how foods get a rancid taste.

How many covalent bonds will a nitrogen atom usually form?

Ozone is both a pollutant and a natural component of the atmosphere.

The Haber process is the first step in the manufacture of sulfuric acid.

What is the formal charge on the central nitrogen atom in N2O?

Which of these atoms is the most electronegative?

________ ________ are formed when molecular hydrogen combines directly with an alkali metal.

What is the general electron configuration for atoms of the halogen group?

What type of bond is the C - Cl bond in CCl4?

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Filters

What is the total number of lone pairs in NCl₃?

Nitrous oxide, N₂O, is

What is the formal charge on the bromine atom in BrO₃^-?

What is the formal charge on the central nitrogen atom in N₂O?

are formed when molecular hydrogen combines directly with an alkali metal.

What type of bond is the C - Cl bond in CCl₄?